3. [-/10 Points) DETAILS OSCOLPHYS1 8.3.023. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Train cars are coupled together by being bumped into one another. Suppose two loaded train cars are moving toward one another, the first having a mass of 170,000 ag and a velocity of 0.300 m/s, and the second having a mass of 95,000 kg and a velocity of 0.120 m/s. (The minus indicates direction of motion3 What is their final velocity m/s DETAILS OSCOLPHYS1 8.5.032. MY NOTES 4. [-/10 Points] ASK YOUR TEACHER PRACTICE ANOTHER In an ice show a 40.0 kg skater leaps into the air and is caught by an initially stationary 70.0 kg skater (a) What is their final velocity assuming negligible friction and that the leaper's original horizontal velocity was 4.00 m/s7 m/s (b) How much kinetic energy is lost?

(a)The value of T is when an upward acceleration of 2.9 m/[tex]s^2[/tex] is 10,757.5 N.

(b) The value of T is when an upward velocity of 10 m/s is 16,433 N.

a) Let the elevator have a mass of 1,675 kg and an upward acceleration of 2.9 m/s^2.

Find T.

We are given,m = 1,675 kg; a = 2.9 m/s²

For finding tension, we need to find the force acting on the mass. The net force acting on the mass can be determined by subtracting the force due to gravity from the force responsible for the acceleration.

F_net = F_app - F_gravityF_gravity = m * g, where g is the acceleration due to gravity and is taken to be 9.8 m/s².

F_app = m * aF_app = 1,675 * 2.9F_app = 4,847.5 N.

Therefore,F_net = F_app - F_gravity,

F_net = 4,847.5 - (1,675 * 9.8),

F_net = 4,847.5 - 16,445,

F_net = - 11,597.5 N

We have taken upward acceleration as positive, so the net force is in the downward direction. Tension,

T = m * (g - a) -ve sign shows that T is in the downward direction

T = (1,675 * (9.8 - 2.9)) N= 10,757.5 N

The value of T is when an upward acceleration of 2.9 m/[tex]s^2[/tex]is 10,757.5 N.

b) The elevator of part (d) now moves with a constant upward velocity of 10 m/s.

Find T.

If the elevator moves with a constant velocity, there is no acceleration.

Therefore, the net force on the elevator is zero. The tension in the cable is equal to the weight of the elevator.

T = m * g= 1,675 * 9.8= 16,433 N

The value of T is when an upward velocity of 10 m/s is 16,433 N.

Learn more about acceleration and velocity https://brainly.com/question/80295

#SPJ11

The distance to the North Star, Polaris, is approximately 6.44x10⁻¹⁸ m. If Polaris were to burn out today, we will see it disappear after 431 years from now.

The distance to Polaris is given as 6.44x10⁻¹⁸m. Light travels at a speed of 3x10⁸m/s. Therefore, the time taken for light to reach us from Polaris will be:

Distance= speed x time

So, time = distance / speed

= 6.44x10⁻¹⁸ / 3x10⁸

= 2.147x10⁻²⁶ s

Since 1 year = 365 days = 24 hours/day = 3600 seconds/hour,The number of seconds in a year = 365 x 24 x 3600 = 3.1536 x 10⁷ seconds/year.

Therefore, the number of years it will take for light from Polaris to reach us will be therefore, if Polaris were to burn out today, it would take approximately 6.8 x 10⁻²⁴ years for its light to stop reaching us. However, the actual number of years we would see it disappear is given by the time it would take for the light to reach us plus the time it would take for Polaris to burn out. Polaris is estimated to have a remaining lifespan of about 50,000 years. Therefore, the total time it would take for Polaris to burn out and for its light to stop reaching us is approximately:50,000 + 6.8x10⁻²⁴ = 50,000 years (to the nearest thousand).Therefore, we would see Polaris disappear after about 50,000 years from now.

To know more about disappear visit :

https://brainly.com/question/29607868

#SPJ11

To calculate the work done by the gas in the expansion, we'll use the formula: Work = P x ΔV, where P is the pressure and ΔV is the change in volume of the gas.

However, since we don't have specific values for the pressure and change in volume, we won't be able to calculate the exact work done. We'll need additional information such as the initial and final volumes or pressures.

Moving on to the change in energy and heat absorbed:

The formula for the internal energy of air is given as U = (5/2) nRT, where n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

To calculate the change in energy (ΔU) going from 300K to 373K, we can subtract the initial energy from the final energy:

ΔU = U_final - U_initial

U_initial = (5/2) (1 mole) (8.314 J/(mol·K)) (300K)

U_final = (5/2) (1 mole) (8.314 J/(mol·K)) (373K)

ΔU = U_final - U_initial

Learn more about volume here : brainly.com/question/13338592
#SPJ11

When a light ray strikes a flat block of glass at an angle of 30° with the normal, with a thickness of 2.0 cm and a refractive index of 1.5, the angles of incidence and refraction at each surface can be calculated. Additionally, the lateral shift of the light ray can be determined.

(a) To find the angles of incidence and refraction at each surface, we can use Snell's law. The law states that the ratio of the sine of the angle of incidence to the sine of the angle of refraction is equal to the ratio of the refractive indices of the two media involved.

Let's assume the first surface of the block as the interface where the light enters. The angle of incidence is given as 30° with the normal. The refractive index of glass is 1.5. Using Snell's law, we can calculate the angle of refraction at this surface.

n1 * sin(θ1) = n2 * sin(θ2)

1 * sin(30°) = 1.5 * sin(θ2)

sin(θ2) = (1 * sin(30°)) / 1.5

θ2 = sin^(-1)((1 * sin(30°)) / 1.5)

Similarly, for the second surface where the light exits the block, the angle of incidence would be the angle of refraction obtained from the first surface, and the angle of refraction can be calculated using Snell's law again.

(b) To calculate the lateral shift of the light ray, we can use the formula:

d = t * tan(θ1) - t * tan(θ2)

where 't' is the thickness of the block (2.0 cm), and θ1 and θ2 are the angles of incidence and refraction at the first surface, respectively.

Substituting the values, we can find the lateral shift of the light ray.

Learn more about  light ray here ;

https://brainly.com/question/32184600

#SPJ11

The current in resistor R3 is 0.94 amperes. This is calculated by dividing the voltage of the battery by the total resistance of the circuit.

The current in the resistor R3 is 0.94 amperes.

To find the current in R3, we can use the following formula:

I = V / R

Where:

I is the current in amperes

V is the voltage in volts

R is the resistance in ohms

In this case, we have:

V = 24 volts

R3 = 6 ohms

Therefore, the current in R3 is:

I = V / R = 24 / 6 = 4 amperes

However, we need to take into account the other resistors in the circuit. The total resistance of the circuit is:

R = R1 + R2 + R3 + R4 = 120 + 3 + 6 + 10 = 139 ohms

Therefore, the current in R3 is:

I = V / R = 24 / 139 = 0.94 amperes

Learn more about current here:

https://brainly.com/question/1220936

#SPJ4

The correct answer is (d) 1.5 A.

The current through a resistor connected to a battery can be calculated using Ohm's Law, which states that the current  (I) flowing through a resistor is equal to the voltage (V) across the resistor divided by its resistance (R). Mathematically, it can be expressed as I = V/R.

In this case, the voltage across the resistor is given as 1.5 V, and the resistance is 1.0 kΩ (which is equivalent to 1000 Ω). Plugging these values into Ohm's Law, we get I = 1.5 V / 1000 Ω = 0.0015 A = 1.5 A.

Therefore, the current through the 1.0 kΩ resistor connected to the 1.5 V battery is 1.5 A.

To know more about resistor click here:  brainly.com/question/30672175

#SPJ11

The accurate choices for each stage in George Engel's Theory of Grief are provided in the statements corresponding to stage I, stage II and stage V.

George Engel's Theory of Grief identifies five stages commonly experienced in response to loss: Denial, Anger, Bargaining, Depression, and Acceptance. These stages offer insights into the emotional and psychological processes individuals undergo when coping with the profound impact of losing a loved one.

Denial is the initial stage, characterized by difficulty accepting or believing the loss. It involves a sense of disbelief or numbness.

Anger follows, involving intense feelings of anger, resentment, and frustration. Individuals may question the reasons behind the loss and direct their anger towards various targets.

Bargaining is the stage where individuals attempt to negotiate or make deals in hopes of reversing the loss. They may engage in "what if" scenarios or express a willingness to do anything to bring the loved one back.

Depression involves profound sadness, a feeling of emptiness, and a profound sense of loss. Individuals may withdraw, experience changes in appetite or sleep, and struggle with guilt and regret.

Acceptance is the final stage, where individuals come to terms with the reality of the loss and adapt to a new normal. It involves integrating the loss into one's life and finding meaning while honoring the memory of the loved one.

Hence, the accurate choices for each stage in George Engel's Theory of Grief are provided in the statements corresponding to stage I, stage II and stage V. "

Learn more about Theory of Grief at: https://brainly.com/question/12187096

#SPJ11

The value is:

(a) To determine the speed of the collar at point B, apply the principle of conservation of mechanical energy.

(b) To satisfy the condition where the collar stops at point B, the relationship between the mass of the collar (m) and the stiffness

(a) To determine the speed of the collar when its center reaches point B, we can apply the principle of conservation of mechanical energy. Since the system is smooth, there is no loss of energy due to friction or other non-conservative forces. Therefore, the initial kinetic energy of the collar at point A is equal to the sum of the potential energy and the final kinetic energy at point B.

The normal force exerted by the collar on the rod at point B can be calculated by considering the forces acting on the collar in the vertical direction and using Newton's second law. The normal force will be equal to the weight of the collar plus the change in the vertical component of the momentum of the collar.

(b) In this scenario, the collar stops at point B. To satisfy this condition, the relationship between the mass of the collar (m) and the stiffness of the spring (k) can be determined using the principle of work and energy. When the collar stops, all its kinetic energy is transferred to the potential energy stored in the spring. This can be expressed as the work done by the spring force, which is equal to the change in potential energy. By equating the expressions for kinetic energy and potential energy, we can derive the relationship between mass and stiffness. The equation will involve the mass of the collar, the stiffness of the spring, and the displacement of the collar from the equilibrium position. Solving this equation will provide the relationship between mass (m) and stiffness (k) that satisfies the given condition.

To know more about mass:

https://brainly.com/question/11954533

#SPJ11

The tension in each cable used to lift the 400-kg box vertically upward, we can use the equilibrium condition and resolve the forces in the vertical and horizontal directions.

Let's denote the tension in each cable as T₁ and T₂.In the vertical direction, the net force is zero since the box is lifted with constant velocity. The vertical forces can be represented as:

T₁sinθ - T₂sinθ - mg = 0, where θ is the angle of the cables with the horizontal and mg is the weight of the box. In the horizontal direction, the net force is also zero:

T₁cosθ + T₂cosθ = 0

Given that the weight of the box is mg = (400 kg)(9.8 m/s²) = 3920 N and θ = 50.0°, we can solve the system of equations to find the tension in each cable:

T₁sin50.0° - T₂sin50.0° - 3920 N = 0

T₁cos50.0° + T₂cos50.0° = 0

From the second equation, we can rewrite it as:

T₂ = -T₁cot50.0°

Substituting this value into the first equation, we have:

T₁sin50.0° - (-T₁cot50.0°)sin50.0° - 3920 N = 0

Simplifying and solving for T₁:

T₁ = 3920 N / (sin50.0° - cot50.0°sin50.0°)

Using trigonometric identities and solving the expression, we find:

T₁ ≈ 2826.46 N

Finally, since T₂ = -T₁cot50.0°, we can calculate T₂:

T₂ ≈ -2826.46 N * cot50.0°

Therefore, the tension in each cable is approximately T₁ ≈ 2826.46 N and T₂ ≈ -2202.11 N.

To learn more about equilibrium click here.

brainly.com/question/30807709

#SPJ11

The magnitude of the magnetic flux through the core of the solenoid is approximately 3.4 Tm².

Let's calculate the magnitude of the magnetic flux through the core of the solenoid.

The magnetic flux through the core of a solenoid can be calculated using the formula:

Φ = B * A

Where:

The magnetic flux (Φ) represents the total magnetic field passing through a surface. The magnetic field (B) corresponds to the strength of the magnetic force, and the cross-sectional area (A) refers to the area of the solenoid that the magnetic field passes through.

The solenoid has a length of 2.7 meters and a diameter of 1.4 meters, resulting in a radius of 0.7 meters. The magnetic field strength inside the solenoid is 2.2 Tesla.

The formula to calculate the cross-sectional area of the solenoid is as follows:

A = π * r²

Substituting the values, we have:

A = π * (0.7 m)²

A = 1.54 m²

Now, let's calculate the magnetic flux:

Φ = B * A

Φ = 2.2 T * 1.54 m²

Φ ≈ 3.39 Tm²

Rounding to two significant figures, the magnitude of the magnetic flux through the core of the solenoid is approximately 3.4 Tm².

Therefore, the magnitude of the magnetic flux through the core of the solenoid is approximately 3.4 Tm².

Learn more about magnitude at: https://brainly.com/question/30337362

#SPJ11

The net force on the charge at the top corner of the triangle is 9.6 μN directed towards the base.

To calculate the net force, we need to find the individual forces exerted by each charge and then determine the vector sum of these forces. The force between two charges can be calculated using Coulomb's law: F = k * |q1 * q2| / r^2, where F is the force, k is the electrostatic constant, q1 and q2 are the charges, and r is the distance between them.

In this case, the charge at the top corner is +3 μC, while the charges at the base corners are both -4 μC. The distance between the top corner charge and each of the base charges can be found using the Pythagorean theorem since the triangle is isosceles.

Using the Pythagorean theorem, the distance between the top corner and each base corner is given by d = √((0.5 * 4)^2 + 5^2) = √(1^2 + 5^2) = √26 m.

Now we can calculate the individual forces. The force between the top charge and each base charge is given by F1 = k * |q1 * q2| / r^2 = (9 x 10^9 Nm^2/C^2) * |(3 x 10^-6 C) * (-4 x 10^-6 C)| / (√26 m)^2 = 3.6 x 10^-5 N.

Since the charges at the base corners are of equal magnitude and opposite sign, the net force on the top charge will be the vector sum of the two forces. Since the forces have the same magnitude and act in opposite directions, we can simply add their magnitudes. Therefore, the net force is F_net = |F1 + F1| = 2 * 3.6 x 10^-5 N = 7.2 x 10^-5 N.

Rounding to two significant figures, the magnitude of the net force on the charge at the top corner is 9.6 μN. The direction of the force is towards the base of the triangle.

learn more about "force ":- https://brainly.com/question/12785175

#SPJ11

"The gravitational potential energy of the satellite is approximately -8.85 x 10¹⁰ Joules."

To estimate the distance of the satellite from the center of the Earth, we can use the formula for the period of a circular orbit:

T = 2π√(r³/GM)

where T is the period, r is the distance from the center of the Earth to the satellite, G is the gravitational constant (approximately 6.67430 x 10⁻¹¹ m³ kg⁻¹ s⁻²), and M is the mass of the Earth.

We are given the period T as 23 hours 56 minutes, which is equivalent to 23.933 hours.

Substituting the known values into the equation, we can solve for r:

23.933 = 2π√(r³/(6.67430 x 10⁻¹¹ x 5.97 x 10²⁴))

Simplifying the equation:

√(r³/(6.67430 x 10⁻¹¹ x 5.97 x 10²⁴)) = 23.933 / (2π)

Squaring both sides of the equation:

r³/(6.67430 x 10⁻¹¹ x 5.97 x 10²⁴) = (23.933 / (2π))²

Simplifying further:

r³ = (6.67430 x 10⁻¹¹ x 5.97 x 10²⁴) x (23.933 / (2π))²

Taking the cube root of both sides of the equation:

r ≈ (6.67430 x 10⁻¹¹ x 5.97 x 10²⁴)°³³x (23.933 / (2π))°⁶⁶

Calculating the approximate value:

r ≈ 4.22 x 10⁷ meters

Therefore, the distance of the satellite from the center of the Earth is approximately 4.22 x 10⁷ meters.

To calculate the kinetic energy of the satellite, we can use the formula:

KE = (1/2)mv²

where KE is the kinetic energy, m is the mass of the satellite, and v is the velocity of the satellite.

Since the satellite is in a circular orbit, its velocity can be calculated using the formula for the circumference of a circle:

C = 2πr

where C is the circumference and r is the distance from the center of the Earth to the satellite.

Substituting the known values:

C = 2π(4.22 x 10⁷) ≈ 2.65 x 10⁸ meters

The time taken to complete one orbit is given as 23 hours 56 minutes, which is approximately 86,136 seconds.

Therefore, the velocity of the satellite can be calculated as:

v = C / time = (2.65 x 10⁸) / 86,136 ≈ 3077.6 m/s

Substituting the mass of the satellite (5.00 x 10² kg) and the velocity (3077.6 m/s) into the kinetic energy formula:

KE = (1/2)(5.00 x 10²)(3077.6)²

Calculating the value:

KE ≈ 2.37 x 10¹⁰ Joules

Thus, the kinetic energy of the satellite is approximately 2.37 x 10¹⁰ Joules.

To calculate the gravitational potential energy of the satellite, we can use the formula:

PE = -GMm / r

where PE is the gravitational potential energy, G is the gravitational constant, M is the mass of the Earth, m is the mass of the satellite, and r is the distance from the center of the Earth to the satellite.

Substituting the known values:

PE = -(6.67430 x 10⁻¹¹ x 5.97 x 10²⁴ x 5.00 x 10²) / (4.22 x 10⁷)

Calculating the value:

PE ≈ -8.85 x 10¹⁰ Joules

The negative sign indicates that the gravitational potential energy is negative, representing the attractive nature of gravity.

Therefore, the gravitational potential energy of the satellite is approximately -8.85 x 10¹⁰ Joules.

To know more about gravitational potential energy visit:

https://brainly.com/question/29490129

#SPJ11

Pressure is measured in units of newtons per square meter (N/m²) or pascals (Pa). Small force applied over a small area produces a large pressure.

Pressure is a measure of the force exerted per unit area. It is typically measured in units of newtons per square meter (N/m²) or pascals (Pa). These units represent the amount of force applied over a given area.

When a small force is applied over a small area, the resulting pressure is high. This can be understood through the equation:

Pressure = Force / Area

If the force remains the same but the area decreases, the pressure increases. This is because the force is distributed over a smaller area, resulting in a higher pressure.

Pressure is a measure of the force exerted per unit area and is typically measured in newtons per square meter (N/m²) or pascals (Pa).

When a small force is applied over a small area, the resulting pressure is high. This is because the force is concentrated over a smaller surface area, leading to an increased pressure value.

To know more about force , visit;

https://brainly.com/question/31175176

#SPJ11

To find the electric field vector on the y-axis at y = 31 cm due to the two charges, we can use the principle of superposition. The electric field at a point is the vector sum of the electric fields produced by each charge individually.

Given:

Charge q1 = +12.6 nC at the origin (x = 0)

Charge q2 = -31.3 nC at x = 24 cm = 0.24 m

Point of interest: y = 31 cm = 0.31 m

We can use Coulomb's law to calculate the electric field produced by each charge at the point of interest.

Electric field due to q1 (E1):

Using Coulomb's law, the electric field at point P due to charge q1 is given by:

[tex]E1 = k * (q1 / r1^2) * u[/tex], where k is the Coulomb's constant, r1 is the distance from q1 to P, and u is the unit vector pointing from q1 to P.

Since q1 is located at the origin, the distance r1 is the distance from the origin to P, which is equal to the y-coordinate of P.

r1 = y = 0.31 m

Plugging in the values:

E1 = [tex]k * (q1 / r1^2) * u1[/tex]

Electric field due to q2 (E2):

Similarly, the electric field at point P due to charge q2 is given by:

E2 = k * (q2 / r2^2) * u, where r2 is the distance from q2 to P, and u is the unit vector pointing from q2 to P.

The distance r2 is the horizontal distance from q2 to P, which is given by:

r2 = x2 - xP

  = 0.24 m - 0

  = 0.24 m

Plugging in the values:

E2 =[tex]k * (q2 / r2^2) * u2[/tex]

Total Electric Field (E):

The total electric field at point P is the vector sum of E1 and E2:

E = E1 + E2

Calculating the magnitudes and directions:

1. Calculate E1:

E1 = k * [tex](q1 / r1^2) * u1[/tex]

2. Calculate E2:

E2 = k [tex]* (q2 / r2^2) * u2[/tex]

3. Calculate E:

E = E1 + E2

Remember to include the appropriate signs and directions for the electric field vectors based on the signs and electric of the .

To know more about concentration visit:

brainly.com/question/31173598

#SPJ11

The normal force on the block from the bottom is 16660 N.

To find the normal force on the aluminum block from the bottom of the water tank, we need to consider the buoyant force acting on the block.

The buoyant force can be calculated using Archimedes' principle, which states that the buoyant force is equal to the weight of the fluid displaced by the submerged object.

First, let's calculate the volume of the aluminum block:

Volume = (Mass of the block) / (Density of aluminum)

Volume = (Mass of the block) / (PAluminum)

Given that the density of aluminum (PAluminum) is 2700 kg/m³ and the block is 100 cm in size, we need to convert the dimensions to meters:

Length = 100 cm = 100/100 = 1 meter

Width = 100 cm = 100/100 = 1 meter

Height = 100 cm = 100/100 = 1 meter

Volume = Length x Width x Height = 1 m x 1 m x 1 m = 1 m³

Since the density of water (Pwater) is 1000 kg/m³, the weight of the water displaced by the block (buoyant force) is:

Buoyant force = Volume x Density of water x gravitational acceleration

Buoyant force = 1 m³ x 1000 kg/m³ x 9.8 m/s² = 9800 N

The normal force on the block from the bottom is equal to the weight of the block minus the buoyant force:

Weight of the block = Mass of the block x gravitational acceleration

Weight of the block = Volume x Density of aluminum x gravitational acceleration

Weight of the block = 1 m³ x 2700 kg/m³ x 9.8 m/s² = 26460 N

Normal force on the block from the bottom = Weight of the block - Buoyant force

Normal force on the block from the bottom = 26460 N - 9800 N = 16660 N

Therefore, the normal force on the aluminum block from the bottom of the water tank is 16660 N.

To learn more about force follow the given limk

https://brainly.com/question/12785175

#SPJ11

The spilled volume of water from the open cylindrical tank, when rotated at 90 rpm, is approximately 0.095 cubic meters.

When the cylindrical tank is rotated, the water inside experiences centrifugal force. This force pushes the water towards the outer edges of the tank, causing it to rise and potentially spill over. To determine the spilled volume, we need to calculate the difference in height between the water level at rest and the water level when the tank is rotating at 90 rpm.

First, we calculate the circumference of the tank using the formula: circumference = 2πr, where r is the radius. Plugging in the given radius of 0.30 meters, we get a circumference of approximately 1.89 meters.

Next, we need to determine the distance traveled by a point on the water's surface when the tank completes one revolution at 90 rpm. To do this, we use the formula: distance = (circumference × rpm) / 60. Substituting the values, we find the distance traveled per minute is approximately 2.98 meters.

Since the tank has a height of 1.2 meters, the ratio of the distance traveled to the tank height is approximately 2.48. This means that the water level will rise by 2.48 times the height of the tank when rotating at 90 rpm.

Finally, we calculate the spilled volume by subtracting the initial height of the water from the increased height. The spilled volume is given by the formula: volume = πr^2(h_new - h_initial), where r is the radius and h_new and h_initial are the new and initial heights of the water, respectively.

Plugging in the values, we get: volume = π(0.3^2)(1.2 × 2.48 - 1.2) ≈ 0.095 cubic meters.Therefore, the spilled volume of water is approximately 0.095 cubic meters.

Learn more about spilled volume

brainly.com/question/11799197

#SPJ11

The necessary applied force (F₁) is approximately 14247.41 N. It can be calculated using Pascal's law, which states that the pressure in a fluid is transmitted equally in all directions.

To find the necessary applied force (F₁) in the hydraulic cylinder system, we can use Pascal's law, which states that the pressure in a fluid is transmitted equally in all directions. In this case, we can equate the pressures acting on the two cylinders. The formula for pressure is P = F/A, where P is the pressure, F is the force, and A is the cross-sectional area of the cylinder.
Let's assume that the small cylinder (with diameter d₁) has a force F₁ acting on it, and the large cylinder (with diameter d₂) has a force F₂ acting on it. The areas of the two cylinders can be calculated using the formula A = πr², where r is the radius of the cylinder.

For the small cylinder: A₁ = π(d₁/2)² = π(0.05 m)² = 0.00785 m²
For the large cylinder: A₂ = π(d₂/2)² = π(0.08 m)² = 0.02011 m². According to Pascal's law, the pressure is the same in both cylinders: P₁ = P₂.
Using the formula P = F/A, we can rewrite this as:

F₁/A₁ = F₂/A₂

Substituting the given values:

F₁/0.00785 = 36500 N / 0.02011

⇒ F₁ = (0.00785 / 0.02011) 36500 N

⇒ F₁ ≈ 14247.41 N

Learn more about Pascal's principle here:

https://brainly.com/question/29630624

#SPJ11

The distance of the run is 11.67 miles.

Speed is the unit rate in terms of distance travelled by an object and the time taken to travel the distance.

Speed is a scalar quantity as it only has magnitude and no direction.

Given that,

Speed of first jogger = 5 mph

Speed of second jogger = 4 mph

Let d be the distance in miles of the run.

Time taken by first jogger be t hours.

Time taken by second jogger = t + (35 minutes) = t + (7/12) hours

Speed = Distance / Time

5 = d / t and 4 = d / (t + 7/12)

d = 5t and d = 4 (t + 7/12)

5t = 4 (t + 7/12)

5t = 4t + 7/3

t = 7/3 hours

d = 5t = 11.67 miles.

Hence the distance ran by both joggers is 11.67 miles.

Learn more about Speed  :

brainly.com/question/28224010

#SPJ11

The number of mole of the gas that was in the system at the end, given that 16.4 moles of the gas was added is 23.9 moles

First, we shall obtain the initial mole of the gas. Details below:

P₁ / n₁ = P₂ / n₂

0.5 / n₁ = 1.6 / (16.4 + n₁)

Cross multiply

0.5 × (16.4 + n₁) = n₁ × 1.6

Clear bracket

8.2 + 0.5n₁ = 1.6n₁

Collect like terms

8.2 = 1.6n₁ - 0.5n₁

8.2 = 1.1n₁

Divide both sides by 1.1

n₁ = 8.2 / 1.1

= 7.5 moles

Finally, we shall obtain the mole of the gas in the system. Details below:

n₂ = n₁ + 16.4

= 7.5 + 16.4

= 23.9 moles

Thus, the mole of the gas in the system is 23.9 moles

Learn more about number of mole:

https://brainly.com/question/29927685

#SPJ4

The amplitude of the blade's simple harmonic motion is 1.0 mm (0.001 m). The maximum blade speed is approximately 0.628 m/s. The magnitude of the maximum blade acceleration is approximately 1256.64 m/s².

The amplitude, maximum blade speed, and magnitude of maximum blade acceleration in the electric shaver:

1. Amplitude (A): The amplitude of simple harmonic motion is equal to half of the total distance covered by the blade. In this case, the blade moves back and forth over a distance of 2.0 mm, so the amplitude is 1.0 mm (or 0.001 m).

2. Maximum blade speed (V_max): The maximum blade speed occurs at the equilibrium position, where the displacement is zero. The maximum speed is given by the product of the amplitude and the angular frequency (ω).

V_max = A * ω

The angular frequency (ω) can be calculated using the formula ω = 2πf, where f is the frequency. In this case, the frequency is 100 Hz.

ω = 2π * 100 rad/s = 200π rad/s

V_max = (0.001 m) * (200π rad/s) ≈ 0.628 m/s

3. Magnitude of maximum blade acceleration (a_max): The maximum acceleration occurs at the extreme positions of the motion, where the displacement is maximum. The magnitude of maximum acceleration is given by the product of the square of the angular frequency (ω^2) and the amplitude (A).

a_max = ω² * A

a_max = (200π rad/s)² * 0.001 m ≈ 1256.64 m/s²

Learn more about ”harmonic motion” here:

brainly.com/question/26114128

#SPJ11

Given that the beam of light, in air, is incident at an angle of 66° with respect to the surface of a certain liquid in a bucket, and the light travels at 2.3 x 108 m/s in such a liquid, we need to calculate the angle of refraction of the beam in the liquid.

We can use Snell's law, which states that the ratio of the sines of the angles of incidence and refraction is equal to the ratio of the velocities of light in the two media. Mathematically, it can be expressed as:

n₁sinθ₁ = n₂sinθ₂

where n₁ and n₂ are the refractive indices of the first and second medium respectively; θ₁ and θ₂ are the angles of incidence and refraction respectively.

The refractive index of air is 1 and that of the given liquid is not provided, so we can use the formula:

n = c/v

where n is the refractive index, c is the speed of light in vacuum (3 x 108 m/s), and v is the speed of light in the given medium (2.3 x 108 m/s in this case). Therefore, the refractive index of the liquid is:

n = c/v = 3 x 10⁸ / 2.3 x 10⁸ = 1.3043 (approximately)

Now, applying Snell's law, we have:

1 × sin 66° = 1.3043 × sin θ₂

⇒ sin θ₂ = 0.8165

Therefore, the angle of refraction of the beam in the liquid is approximately 54.2°.

Learn more about the refractive indices: https://brainly.com/question/31051437

#SPJ11

The apparent brightness of star A and star B is different, but their luminosities are identical. Star A is 20 light years away.

Apparent brightness refers to how bright a star appears to us from Earth, while luminosity refers to the actual brightness or total amount of energy a star emits. In this case, even though star A and star B have the same luminosity, star A appears less bright because it is located farther away from us.

The apparent brightness of a star decreases as the distance between the star and the observer increases. Apparent brightness refers to how bright a star appears to us from Earth, while luminosity refers to the actual brightness or total amount of energy a star emits. Therefore, even though star A and star B have the same amount of energy being emitted, the distance affects how bright they appear to us from Earth.

To know more about brightness visit:

https://brainly.com/question/12500676

#SPJ11

The value of the changed current is 5.9 amps. The diameter of the circular loop of wire is approximately 0.636 meters.

For the first problem, the initial current is 5.9 A, and the initial magnetic force is 0.031 N. When the magnetic force changes to 0.019 N, the current remains the same at 5.9 A.

For the second problem, we can use Faraday's law of electromagnetic induction to find the diameter of the loop. The induced electromotive force (emf) is 2.5 V, the initial magnetic field is 4.1 T, and the final magnetic field is 1.2 T.

Using the formula ε = -N(dΦ/dt), we can rearrange it to find the rate of change of magnetic flux, dΦ/dt.

dΦ/dt = -(ε / N)

Substituting the given values:

dΦ/dt = -(2.5 V / 15)

Now, we can integrate the equation to find the change in magnetic flux over time:

ΔΦ = ∫ (dΦ/dt) dt

ΔΦ = ∫ (-(2.5 V / 15)) dt

ΔΦ = -(2.5 V / 15) * (0.25 s)

ΔΦ = -0.0417 V·s

Since the magnetic field is perpendicular to the surface of the loop, the change in magnetic flux is related to the change in magnetic field:

ΔΦ = BΔA

where ΔA is the change in the area of the loop.

ΔA = ΔΦ / B

ΔA = (-0.0417 V·s) / (4.1 T - 1.2 T)

ΔA = (-0.0417 V·s) / 2.9 T

Now, the area of a circular loop is given by A = πr², where r is the radius.

Since the loop has 15 turns, the number of turns multiplied by the area will give us the total area of the loop:

15A = πr²

Substituting the value of ΔA:

15 * (ΔA) = πr²

Solving for r, we can find the radius:

r = sqrt((15 * (ΔA)) / π)

Substituting the known values:

r = sqrt((15 * (-0.0417 V·s)) / π(2.9 T))

Finally, to find the diameter, we multiply the radius by 2:

diameter = 2 * r

Calculating the value gives us approximately 0.636 meters for the diameter of the loop.

To learn more about loop.

Click here:brainly.com/question/30175986

#SPJ11

The magnitude of the magnetic force on the smoke particle is 9.0x10^(-4) N with the direction of the force towards the East.

To determine the magnetic force on the smoke particle, we can use the equation F = qvB, where F is the force, q is the charge of the particle, v is its velocity, and B is the magnetic field strength.

Given that the charge of the smoke particle is -9.0x10^(-1) C, its velocity is 2.0 mm/s (which can be converted to 2.0x10^(-3) m/s), and the magnetic field strength is 0.50 T, we can calculate the magnetic force.

Using the equation F = qvB, we can substitute the values: F = (-9.0x10^(-1) C) x (2.0x10^(-3) m/s) x (0.50 T). Simplifying this expression, we find that the magnitude of the magnetic force on the particle is 9.0x10^(-4) N.

The direction of the magnetic force can be determined using the right-hand rule. Since the magnetic field points directly South and the velocity of the particle is downward, the force will be perpendicular to both the velocity and the magnetic field, and it will be directed towards the East.

Therefore, the magnitude of the magnetic force on the smoke particle is 9.0x10^(-4) N, and the direction of the force is towards the East.

Learn more about magnetic force here; brainly.com/question/10353944

#SPJ11

The frequency of the object's motion is 1/19 Hz

Given that an object moves around a circle of radius 10 meters in 19 seconds.

We need to find the frequency of the object's motion.

Formula for the frequency of the object's motion

Frequency of the object's motion is defined as the number of cycles completed by an object in one second. It is denoted by "f" and measured in hertz (Hz).

f = 1/Twhere,T is the time taken by the object to complete one cycle.

We have the radius of the circle, not the diameter or circumference of the circle.

Therefore, we need to find the circumference of the circle using the radius of the circle.

Circumference of the circle = 2πr= 2 x π x 10 = 20π

The object completes one full cycle to come back to its original position after it moves around the circle.

So, the time taken by the object to complete one cycle (T) = 19 seconds

Therefore, the frequency of the object's motion,f = 1/T= 1/19 Hz

Let us know more about motion : https://brainly.com/question/12640444.

#SPJ11

The average velocity that was travelled is given as 60 km

The speed is given as 80 km in 1 hour

The formula for velocity is given as total distance / total time

The total distance that was covered is given as

100 km + 80 km

= 180 km

Next we will have to solve for the total time

The total time is given as

1 hour + 2 hours

= 3 hours

Next we have to apply the velocity formula

= 180 / 3

= 60 km

Read more on average velocity here https://brainly.com/question/24739297

#SPJ4

Question

A car drives north for one hour at 80 km It then continues north, traveıing average at 100 km for 2 hours.  What is its average velocity ? A) 140 north (b) 65 c 60 d 50

The binding energy of 56Fe is approximately 496.06 MeV.

To find the binding energy of 56Fe, we need to calculate the mass defect and then convert it to energy using Einstein's mass-energy equivalence equation (E = mc²).

Given:

Number of protons (Z) = 26

Number of neutrons (N) = 30

Atomic mass of proton (mp) = 1.007316 amu

Atomic mass of neutron (mn) = 1.008701 amu

First, we calculate the mass defect (Δm):

Δm = [tex]Z \times mp + N \times mn - Atomic mass of 56Fe[/tex]

To find the atomic mass of 56Fe, we can look it up. The atomic mass of 56Fe is approximately 55.93494 amu.

Substituting the values:

[tex]\Delta m = 26\times 1.007316 amu + 30 \times1.008701 amu - 55.93494 amu[/tex]

Δm ≈ 0.5323 amu

Now, we convert the mass defect to kilograms by multiplying by the atomic mass unit (amu) to kilogram conversion factor, which is approximately [tex]1.66054 \times 10^{-27}[/tex] kg.

Δm ≈ [tex]0.5323 amu\times 1.66054 \times 10^{-27} kg/amu[/tex]

Δm ≈ [tex]8.841 \times 10^{-28}[/tex] kg

Finally, we can calculate the binding energy (E) using Einstein's mass-energy equivalence equation:

E = Δmc²

where c is the speed of light (approximately [tex]3.00 \times 10^{8}[/tex]m/s).

E ≈ [tex](8.841 \times 10^{-28} kg) \times (3.00\times 10^{8} m/s)^2[/tex]

E ≈ [tex]7.9569 \times 10^{-11}[/tex] J

To convert the energy from joules to mega-electron volts (MeV), we can use the conversion factor: 1 MeV = [tex]1.60218 \times 10^{-13}[/tex]J.

E ≈ [tex]\frac{(7.9569 \times 10^{-11} J) }{ (1.60218 \times 10^{-13} J/MeV)}[/tex]

E ≈ 496.06 MeV

Therefore, the binding energy of 56Fe is approximately 496.06 MeV.

Learn more about binding here: brainly.com/question/31964014

#SPJ11

The kinetic energy of skater A is 10200 J. In an elastic collision, both momentum and kinetic energy are conserved. We can use these principles to solve the problem.

Let's denote the skater with mass 50 kg as skater A and the skater with mass 58 kg as skater B.

Mass of skater A ([tex]m_A[/tex]) = 50 kg

Mass of skater B ([tex]m_B[/tex]) = 58 kg

Initial velocity of skater A ([tex]v_Ai[/tex]) = 5 m/s

Initial velocity of skater B ([tex]v_Bi[/tex]) = 6 m/s

Final velocity of skater B ([tex]v_Bf[/tex]) = -2 m/s (negative sign indicates direction)

Using the conservation of momentum:

[tex]m_A * v_Ai + m_B * v_Bi = m_A * v_Af + m_B * v_Bf[/tex]

Substituting the given values:

(50 kg * 5 m/s) + (58 kg * 6 m/s) = (50 kg * [tex]v_Af[/tex]) + (58 kg * -2 m/s)

Simplifying the equation:

250 kg·m/s + 348 kg·m/s = 50 kg *[tex]v_Af[/tex]- 116 kg·m/s

598 kg·m/s = 50 kg *[tex]v_Af[/tex] - 116 kg·m/s

Rearranging the equation to solve for[tex]v_Af[/tex]:

[tex]v_Af[/tex] = (598 kg·m/s + 116 kg·m/s) / 50 kg

[tex]v_Af[/tex] = 14.28 m/s

Therefore, the final velocity of skater A ([tex]v_Af)[/tex] is approximately 14.28 m/s.

To calculate the kinetic energy of skater A, we can use the formula:

Kinetic Energy (KE) = (1/2) * m *[tex]v^2[/tex]

[tex]KE_A[/tex] = (1/2) * [tex]m_A * v_Af^2[/tex]

[tex]KE_A[/tex] = (1/2) * 50 kg * ([tex]14.28 m/s)^2[/tex]

[tex]KE_A[/tex] = 10200 J

Rounding up to the nearest integer, the kinetic energy of skater A is 10200 J.

Learn more about kinetic energy here:

https://brainly.com/question/30107920

#SPJ11

The expression for the image distance, d is;d' = 0.00093 m

Given that: Height of candle, h = 0.24 m

Distance of candle from the left of the lens, d= 0.48 m

Focal length of the diverging lens, f = -0.071 m

Image distance, d' is given by the lens formula as;1/f = 1/d - 1/d'

Taking the absolute magnitude of f, we have f = 0.071 m

Substituting the values in the above equation, we have; 1/0.071 = 1/0.48 - 1/d'14.0845

= (0.048 - d')/d'

Simplifying the equation above by cross multiplying, we have;

14.0845d' = 0.048d' - 0.048d' + 0.071 * 0.48d'

= 0.013125d'

= 0.013125/14.0845

= 0.00093 m (correct to 3 significant figures).

Therefore, the expression for the image distance, d is;d' = 0.00093 m

To learn more about image visit;

https://brainly.com/question/30725545

#SPJ11

The distance to the Cepheid variable is approximately 2.52 million parsecs.

The absolute magnitude of the Sun is 4.83.

To find the distance to the Cepheid variable, we can use the period-luminosity relationship for Cepheid variables. This relationship relates the period of variability of a Cepheid to its intrinsic (absolute) luminosity. The equation for this relationship is:

M = -2.43 log(P) - 1.15

where M is the absolute magnitude of the Cepheid and P is its period in days.

Using the given period of 17 days, we can find the absolute magnitude of the Cepheid:

M = -2.43 log(17) - 1.15

M = -2.43 x 1.230 - 1.15

M = -4.02

Next, we can use the distance modulus equation to find the distance to the Cepheid:

m - M = 5 log(d) - 5

where m is the apparent magnitude of the Cepheid and d is its distance in parsecs.

Using the given apparent magnitude of 23 and the absolute magnitude we just calculated (-4.02), we can solve for the distance:

23 - (-4.02) = 5 log(d) - 5

27.02 = 5 log(d) - 5

32.02 = 5 log(d)

log(d) = 6.404

d = 10^(6.404) = 2.52 x 10^6 parsecs

Therefore, the distance to the Cepheid variable is approximately 2.52 million parsecs.

The absolute magnitude of the Sun is 4.83.

Learn more about "Cepheid variable" : https://brainly.com/question/19132746

#SPJ11