Newton's fist law is just about what happens if no force is applied.
O True
O False
Answer:
True
Explanation:
Answer:TRUE
Explanation:
identify the statement that is true about the big bang. a. it began with all matter and energy concentrated in an infinitesimally small point. b. the big bang theory states that at the instant of explosion, atoms of all major elements came into existence. c. it is the explanation for how our solar system developed. d. it occurred less than 13 million years ago.
The big bang theory states that at the instant of explosion, atoms of all major elements came into existence.
What is explosion?
A blast is a fast development in volume related with a very energetic outward arrival of energy, normally with the age of high temperatures and arrival of high-pressure gases. A blast is an unexpected, vicious difference in likely energy to work, which moves to its environmental factors as a quickly moving ascent in pressure called an impact wave or shock wave. The shock wave can cause significant harm. A blast is an unexpected, rough difference in likely energy to work, which moves to its environmental elements as a quickly moving ascent in pressure called an impact wave or shock wave.
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A wrecking ball has a mass of 650 kg. it swings from a cable that is 21 m long. the centripetal force on the ball is 56 n. what is the tangential speed of the wrecking ball? 1.3 m/s 1.8 m/s 46 m/s 870 m/s
By using centripetal force, the tangential speed is 1.35 m/s.
We need to know about centripetal force to solve this problem. The centripetal force is a force caused by moving objects in a circular motion. The magnitude of the centripetal force depends on tangential speed, mass and radius. It can be written as
Fc = m . v² / r
where Fc is the centripetal force, m is mass, v is tangential speed and r is the radius.
From the question above, we know that
m = 650 kg
r = 21 m
Fc = 56 N
By substituting the given parameters, we get
Fc = m . v² / r
56 = 650 . v² / 21
v² = 1.81
v = 1.35 m/s
Hence, the tangential speed is 1.35 m/s.
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Answer:
A. 1.3 m/s
Explanation:
Person above is correct!
Attached these other pictures just incase. : )
For the last picture its is:
✔ V
✔ W
✔ Y
if you had to explain science to a fifth grader, what would you say?
Answer: It is the study of the environment and objects around us and how they interact with each other. It is a systematic study that involves collecting information, observing,and experimentation.
Explanation:
The subatomic particles that are least massive and most massive respectively are the.
Answer:
the fundamental particle that has the least and most massive are the electron and the neutron.
Explaination:
Electrons are the least massive subatomic particles, and they are found in nucleus. neutron is the heaviest sub-atomic Particles among the given subatomic particles with mass of 1.008 amu.
Consider (a) an electron (b) a photon, and (c) a proton, all moving in vacuum. Choose all correct answers for each question. (vi) Which have a wavelength characterizing their motion?
Electron , photon and proton have wavelength which is option (a) , (b) and (c) .
An electron is a solid negatively charged factor of an atom. Electrons exist outdoor of and surrounding the atom nucleus. Each electron includes one unit of bad charge (1.602 x 10^-19 coulomb)A proton is a subatomic particle discovered with inside the nucleus of each atom. The particle has a advantageous electric charge, identical and contrary to that of the electron A photon is a subatomic particle, having strength and momentum however no mass or electric powered charge, this is the quantum unit of electromagnetic radiation, together with light.De Broglie derived the relationship between the wavelength and momentum of matter. This relationship is known as de Broglie's relationship.
De Broglie's relationship is given by [tex]\lambda=\frac{h}{mv}[/tex] .....(1) where λ is known as de Broglie wavelength and m is mass , v is velocity , h = Plank’s constant .
With the help of equation (1) we can determine the wavelength of the electron and proton .
For photon , the wavelength is given by
[tex]E=hv=\frac{hc}{\lambda}[/tex]
Where h is plank's constant and c is speed of light , v is frequency of the inicident photons .
Thus, we can determine the wavelength of electron , photon and proton.
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The average bond dissociation energy of a carbon-carbon bond is 410 kj/mol. What wavelength in nanometers of ultraviolet radiation has an energy of 410 kj/mol?.
The average bond dissociation energy of carbon-carbon bond is 410 kj/mol. 292 wavelength in nanometers of the ultraviolet radiation has an energy of 410 kj/mol.
What do you mean by wavelength?The distance between the two successive crests or troughs of wave is known as its wavelength. It is measured in wave's direction.
The distance wave travels between its crests or troughs is known as its wavelength (which may be an electromagnetic wave, a sound wave, or the any other wave). Wave's crest is its highest point, while its dip is the lowest. Since wavelength is a measure of both the distance and length, it is expressed in the length units such meters, centimeters, millimeters, and nanometers.
Wavelength of light varies with the colors, i.e., it is different for the every color. Red color has the longest wavelength while violet has least. The wavelength of the UV radiation is shorter than the violet light. Similarly, the wavelength of the infra red radiation is longer than the wavelength of red light.
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use the data from the table to calculate the average velocity for the car to one decimal place
In the given question, we can infer from the table that the average velocity for the car upto one decimal place is 7.3 m/s.
Velocity is defined as the ratio of Displacement of a body to the time it has take for the displacement. We can find the average velocity but adding up all the velocities and then divide it by number of occurrences. Using the data, after adding up all the average velocities, we get the value as 87.497 m/s. As the number of velocities are 12, we divide the total velocity by 12 and fing the mean velocity. The mean or average velocity is : 87.497 / 12 = 7.291416. Upto one decimal place, we get the value as 7.3 m/s.
Hence the average or mean velocity from the given data is 7.3 m/s
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A glass slab of density 2500kg/m3 measures 20cmx10cmx50cm what is maximum pressure
Answer:
A =150
I think it will help you bro
hich of the following is a pointing device that can be useful if you have very limited space on your desk?
Common pointing devices used to control screen movement include computer mouse, touch pads, touch screens, graphics tablets, and trackballs. Some of these devices, such as mic and joysticks, can be added to the computer system according to your needs.
Pointing device is a general term for any device used to control cursor movement on a computer screen.
For desktop computers, the most common pointing device is the computer mouse. A touchpad is the most common pointing device on laptop computers. Finally, the most common pointing device on smartphones and tablets is the finger on the touchscreen.
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Assume a 150 -W loudspeaker broadcasts sound equally in all directions and produces sound with a level of 103dB at a distance of 1.60 m from its center.(a) Find its sound power output. If a salesman claims the speaker is rated at 150W , he is referring to the maximum electrical power input to the speaker.
According to the question; The output power is 0.643W.
What do you mean by power?Power is the quantity of energy that is transported or transformed per unit of time in physics. The watt, which is equal to one joule per second in the International System of Units, is the unit of power. Power may also be referred to as activity in earlier writings. A scalar concept is a power.
According to the question:
Power, P₁ = 150W
Sound intensity level, β = 103db
Distance, d = 1.60m
The sound intensity level is β = 10log(I/I₀)
Reference intensity I₀ = 10⁻¹²
By solving, Intensity, I = 0.02w/m²
Power output P₀ = (4πd²) I
P₀ = 0.643W
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A long solenoid with closely spaced turns carries electric current. Does each turn of wire exert (a) an attractive force on the next adjacent turn, (b) a repulsive force on the next adjacent turn, (c) zero force on the next adjacent turn, or (d) either an attractive or a repulsive force on the next turn, depending on the direction of current in the solenoid?
An attractive force on the next adjacent turn of wire exerted.
A long solenoid with closely spaced turns carries electric current, then the force does each turn of wire exert on the next adjacent turn is attarctive.
By combining a solenoid and a bar magnet, an electric current is generated. Which adjustments will result in a reduction in the amount of electric current generated?When a solenoid and a bar magnet are used to create an electric current, the amount of wire loops in the solenoid that are used to create the current decreases. Magnetic field of solenoid depends on the number of coils present in the solenoid and the amount of current flowing from the coil.
If we increases the number of coils present in the solenoid then the electric current is also increases.Fewer no. of loops on the solenoid decreases the amount of electric current present in that coil.Using a stronger magnet near the solenoid also increases the strength of the electric current, as of the induced magnetic field.Moving a solenoid instead of magnet inside the loop, is also increases the electric current.And moving of magnet near and far away from the solenoid fastly or slowly also increases the electric current, due to electro magnetic induction.To know more about solenoid , visit :
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QC A 3.00 -g copper coin at 25.0°C drops 50.0m to the ground. (a) Assuming 60.0% of the change in gravitational potential energy of the coin-Earth system goes into increasing the internal energy of the coin, determine the coin's final temperature. "
The final temperature of the coin is determined as 25.76 ⁰C.
Gravitational potential energy of the coin-Earth system
P.E = mgh
where;
m is mass of the coinh is height of fallP.E = 0.003 x 9.8 x 50
P.E = 1.47 J
Increase in the internal energy of the coinQ = 60% of 1.47 J
Q = 0.6 x 1.47 J
Q = 0.882 J
Final temperature of the coin
Q = mcΔθ
Q = mc (T - 25)
where;
c is specific heat capacity of copper = 389 J/kgK0.882 = 0.003 x 389(T - 25)
0.756 = T - 25
T = 25.76 ⁰C
Thus, the final temperature of the coin is determined as 25.76 ⁰C.
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After rock y is released from rest several seconds after rock x is released from rest, what happens to the separation distance s between the rocks as they fall but before they reach the ground, and why? take the positive direction to be downward.
's' increases at all times that Rock X falls since Rock X falls with a greater velocity than Rock Y.
What is a frictional force?The friction force is the opposite force generated when two parts slide over each other if the air is passing over the rocks the frictional force would be the drag force.
Given: Frictional forces are considered to be negligible.
A few seconds after Rock X is released from rest, Rock Y is also released. Consider moving downward to be constructive. Both rocks are launched from rest, thus their initial velocities are equal to zero (u = 0).
We know that the velocity is given by,
v² = u² + 2as
Rock X is released first, followed by Rock Y, and because Rock X travels faster than Rock Y, it travels farther. This is due to the fact that whenever Rock X has already acquired some velocity (t).
Its velocity (v) is higher, increasing the spacing (s). In conclusion, because Rock X falls faster than Rock Y,'s' rises each time Rock X hits the ground.
The complete question is given below:-
Rock X is released from rest at the top of a cliff that is on Earth. A short time later, Rock Y is released from rest from the same location as Rock X. Both rocks fall for several seconds before landing on the ground directly below the cliff. Frictional forces are considered to be negligible. After Rock Y is released from rest several seconds after Rock X is released from rest, what happens to the separation distance S between the rocks as they fall but before they reach the ground, and why? Take the positive direction to be downward.
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Calculate the magnitude of the magnetic field at a point 25.0cm from a long, thin conductor carrying a current of 2.00 A.
[tex]distance between rod and $O$ is $=r=25 \mathrm{~cm}=0.25 \mathrm{~m}$\\is $=r=25 \mathrm{~cm}=0.25 \mathrm{~m}$Let us assume, athat rod to infinite then angle $\theta_1$ and $\theta_2$ is equal to $90^{\circ}$ Now, According to Biot-Sewart law, magnetic field (B) due thin rod is magnetic field (E) due thin rod is$$\Rightarrow B=\frac{\mu_0}{4 \pi} \frac{I}{r}\left[\sin \phi_1+\sin \phi_2\right]$$[/tex][tex]$\because \frac{\mu_0}{4 \pi}=$ Proportionality Constant $=10^{7 t}$$\sin \phi_1+\sin \phi_2=\sin 90^{\circ}+\sin 90^{\circ}=2$$$\Rightarrow B=10^{-7} \times \frac{2}{0.25} \times 2$$$\Rightarrow B=16 \times 10^{-7} \mathrm{~T}$Hence, Magnitude of magnetic fell due to thin rod is $16 \times 10^{-7} \mathrm{~T}$.[/tex]
What is magnitude?The magnitude or size of a mathematical item defines whether it is greater or smaller than other things of the same sort in mathematics. Formally speaking, the size of an item is the exhibited outcome of an ordering—of the class of objects to which it belongs.
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The formulation of kepler's laws of planetary motion relied on the data and observations of which scientist other than kepler?
The formulation of Kepler's laws of planetary motion relied on the data and observations of Tycho Brahe
Kepler's laws of planetary motion are as follows:
The Planets orbit in an elliptical orbit with sun as its focus.A planet whichever position in its orbit it may be present, it covers the same area in space in the same amount of time.The time taken by a planet to complete one rotation is proportional to the size of the orbit.Tycho Brahe used a telescope to propose a model in which the planets orbit around the sun but the sun orbits the Earth in elliptical orbits. This provided a clear idea for Kepler about the position of planets.
Therefore, the formulation of Kepler's laws of planetary motion relied on the data and observations of Tycho Brahe
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Two types of spiral galaxies exist. A normal spiral galaxy is one kind. Which phrase best describes the second type of spiral galaxy?.
The option 4 best describes the second type of spiral galaxy.
In a spiral galaxy, the revolving disc is surrounded by spiral 'arms' that extend outward from a compact center area. With yellowish bulges in the middle, spiral galaxies look as flat, blue-white disks of stars, gas, and dust.
These galaxies are classified into two types: regular spirals and barred spirals.
Regular spiral galaxies have a complicated structure: a large central bulge at the center of a revolving disc with a spiral structure that originates at the bulge. Spiral galaxies are encircled by sparsely populated halos, which are approximately spherical areas above and below the plane of the discs. In contrast to regular spiral galaxies, barred spirals have arms that link to the two ends of a straight bar of stars that has a nucleus at its center.
Thus, option 4 best describes the second type of spiral galaxy.
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Two types of spiral galaxies exist. A normal spiral galaxy is one kind. Which phrase best describes the second type of spiral galaxy?
is football-shapedis irregularly shapedhas arms that start close to the centerhas a bar through the middle from which arms extendWhat determines how long a projectile that has been launched from ground level is in the air?.
Basically what determines how long a projectile that has been launched from ground level is in the air are: the initial velocity and the effect of the force of gravity.
The time of flight of a projectile is defined by the following equation:
t(of)=2*t max
Where:
t(of) = time of flightt max = time to reach maximum heightThe maximum time is defined by the following equation:
t max = v₀/ g
Where:
v₀ = initial velocityg = gravityThat means that the higher the initial launch velocity, the longer the projectile will be in the air.
What is vertical launch upwards?In physics vertical launch upwards is the motion described by an object that has been launched vertically upwards in which the height and the effect of the earth's gravitational force on the launched object are taken into account.
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Raquel says, “I just saw an ad that has my favorite song and my favorite colors. It’s for the new theme park in town. I love theme parks.” A businessperson would say that this ad accurately _____ Raquel.
A.
challenges
B.
applies
C.
targets
D.
networks
Answer:
C. Targets
Explanation:
Because the Ad for the theme park effectively caught Raquel's attention, a businessperson would say that the ad accurately targeted Raquel. Marketers use specific colors, themes, designs, songs, etc to target a specific audience.
if a ball is thrown straight up into the air with an initial velocity of 8080 ft/s, its height in feet after tt second is given by y
The average velocity for the time period beginning when t=1 and lasting
(i) 0.01 seconds = 63.84 ft/s
(ii) 0.001 seconds = 63.984 ft/s
Given that a ball is thrown with an initial velocity = 80 ft/s
Let 'y' be the height in feet after 't' seconds.
Given, [tex]y=80t-16t^2[/tex] gives the height in 't' seconds.
Average velocity = Rate of change of distance
= Change in distance/Change in time.
The initial time can be taken as 0 s.
When t =1 s, y = 80 - 16 = 64 ft
(1) t = 0.01 s
y = 80 x 0.01 - 16 x 0.01 x 0.01 = 0.7984 ft
Average velocity = (64 - 0.7984) / (1 -0.01) = 63.84 ft/s
(2) t = 0.001 s
y = 80 x 0.001 - 16 x 0.001 x 0.001 = 0.079984 ft
Average velocity = (64 - 0.079984) / (1 -0.001) = 63.984 ft/s
The question is incomplete. Find out the complete question below:
If a ball is thrown straight up into the air with an initial velocity of 80 ft/s, it height in feet after t second is given by [tex]y=80t-16t^2[/tex] .Find the average velocity for the time period beginning when t=1 and lasting
(i) 0.01 seconds
(ii) 0.001 seconds
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if a ball is thrown into the air with a velocity of 44 ft/s, its height in feet t seconds later is given by y
The ball that is thrown into the air with a velocity of 44 ft/s, its height in feet t seconds later is given by the following equation:
y=44 ft/s * t - (32.17 ft/s² * t²/2)
The height in (ft) at a time (t) of a body that has been thrown with a certain velocity and is in vertical motion is given by the following equation:
y = vi * t - (g* t²/2)
Where:
y = heightvi = initial velocityg = gravityt = time
Information about the problem:
vi = 44 ft/sg = 32.17 ft/s²y =?t = tApplying the height formula we get:
y = vi * t - (g* t²/2)
y = 44 ft/s * t - (32.17 ft/s² * t²/2)
What is the vertical upward launch?It is the movement described by an object that has been thrown vertically upwards in which the height and the effect of the force of the earth's gravity on the thrown object are considered.
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Doug rides a motorcycle at an average speed of 42 miles per hour for 3.6 hours
The distance Doug travelled is 151.2 miles
What is speed?Speed is the distance travelled per unit. Mathematically, it can be expressed as:
Speed = distance / time
With the above formula, we can determine the distance. Details below
Data obtained from the questionFrom the question given above, the following data were obtained:
Speed = 42 miles per hourTime = 3.6 hoursDistance =? How to determine the distanceThe distance Doug travelled can be obtained as follow:
Speed = Distance / time
Cross multiply
Distance = speed × time
Distance = 42 × 3.6
Distance = 151.2 miles
Thus, the distance he travelled is 151.2 miles
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Complete question:
Doug rides a motorcycle at an average speed of 42 miles per hour for 3.6 hours. What is the distance he travels in miles?
If Michael Jordan has a vertical leap of 4.62 m, then what is his takeoff speed? Assume his acceleration would only be gravity and at his highest point he would be moving 0 m/s. (TWO decimal places and POSITIVE)
Takeoff speed will be 9.52 m/s
Given,
Vertical leap = Distance covered, S = 4.62 m
According to the Third Equation of Motion which relates Initial and final velocities with the distance and acceleration, we can say that
[tex]v^{2} = u^{2} + 2as[/tex]
v = 0 m/s (final speed)
a = g = -9.81 m/s² ('a' is taken negative because acceleration is acting towards the ground)
S = 4.62 m
So according to the equation,
u² = - 2 * (-9.81) * 4.62
u² = 90.644
[tex]u = \sqrt{90.644}[/tex]
u = 9.52 m/s
Therefore the initial speed or the takeoff speed of Michael Jordan for the Vertical leap of 4.62m will be 9.52 m/s.
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(b) What If? If this conductor is reshaped to form a circular loop and carries the same current, what is the value of the magnetic field at the center?
given l=0.44m ,I=8.8A
a)the magnetic field produced by each side of square is given by
B =(μ₀I/4πa)(sinθ₁-sinθ₂)
where θ₁=45° ,θ₂=-45° and a=l/2
each side produces a field into the page .the four sides altogether produce
B₍center₎=4B =4(μ₀I/4πa)(sinθ₁-sinθ₂) =(μ₀I/π(l/2))(sin45-sin45)
B ₍center₎ =(2√2μ₀I/π1)
B ₍center₎ =2√2*4π*10⁻⁷*8.8/π*0.44 =2.26*10⁻⁵T or 22.6μT into the page
b)now the conductor is reshaped into single turn circular coil.
for single turn circular coil 41=2πR =>R=21/π
B =μ₀I/2R =μ₀I/2(21/π) =μ₀πI/41
B =4π*10⁻⁷*π*8.8/4*0.44 =1.974*10⁻⁵T or 19.74μT.
What is conductor?A conductor permits current to pass through it effortlessly. On the surface of conductors, there is an electric charge.
When held in a magnetic field, conductors do not retain energy. Electrons make up the current. In contrast, an insulator blocks the flow of electricity via it.
Conductors are classified into four types: excellent conductors, semiconductors, resistors, and non-conductors.
Metals, aqueous salt solutions (ionic chemicals dissolved in water), graphite, and the human body are all examples of conductors.
Most metals are thought to be good electrical current conductors. Copper is simply one of the most common materials used in conductors. Silver, gold, and aluminum are other materials that are occasionally employed as conductors.
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Calculate the mass of a wind turbine blade with a kinetic energy of 1 MJ Turning at 6m/s
The calculated mass is 5.5*10⁴ g.
The energy an object has as a result of motion is known as kinetic energy in physics. It is described as the effort required to move a mass-determined body from rest to the indicated velocity. The body holds onto the kinetic energy it acquired during its acceleration until its speed changes. The energy an object has as a result of motion is known as kinetic energy. A force must be applied to an object in order to accelerate it. We must put in effort in order to apply a force. After the work is finished, energy is transferred to the item, which then moves at a new, constant speed.
K.E = 1/2 mv²
1 MJ= 10⁶ J
10⁶=1/2 m * 6*6
10⁶*2=m*36
m= 5.5 *10⁴ g
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Which structural damage could be expected if a Category 3 hurricane is predicted to hit an area?(1 point)
Well-built framed homes could sustain severe damage, with loss of most of the roof structure and some exterior walls.
Well-constructed frame homes could have damage to the roof, shingles, vinyl siding, and gutters.
A high percentage of framed homes could be destroyed, with total roof failure and wall collapse.
Well-built framed homes could incur major damage or removal of roof decking and gable ends.
The structural damage which could be expected if a Category 3 hurricane which is predicted to hit an area is high percentage of framed homes could be destroyed, with total roof failure and wall collapse and is denoted as option C.
What is Hurricane?This refers to the rapidly rotating storm which has a low-pressure center and is characterized by strong winds ad thunderstorms and of different types such as category 1 to 3.
Category 3 hurricane leads to loss of lives and properties which is depicted as framed homes being destroyed with total roof failure and wall collapse which is why option C was chosen.
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how will the gravitational force between the moon and a spacecraft change as the spacecraft nears the moon? it will increase. it will increase. it will repel the spacecraft. it will repel the spacecraft. it will decrease. it will decrease. it will remain the same.
As the spacecraft nears the moon, its gravity will increase.
This is because the gravitational force between objects is inversely proportional to their distances from each other.
The gravitational force between a spacecraft and moon will also increase as they get closer together due to tidal forces. Tidal forces are caused by differences in water levels at either side of an object and are strongest when two objects are close together (i.e., when they're orbiting).
Therefore, When a spacecraft is close to the moon, the gravitational force between it and the moon will increase.
What does the term "tidal force" mean?Tidal forces are the outward pushing and pulling of water caused by the gravitational pull exerted on seawater by a larger body. They play an important role in coastal dynamics, including wave formation, erosion, and sedimentation.To learn more about tidal force, visit:
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In December 2020, SpaceX Falcon 9 was launched into orbit at the Kennedy Space Center in Cape Canaveral. Explain how Newton's three laws are at work when the SpaceX Falcon 9 was launched into orbit? (Use 5 sentences, 50 points, mark brainliest.)
Answer:
It is the only commercial rocket to ever launch humans to orbit. On 24 January 2021, Falcon 9 set a record for the most satellites launched by a single rocket, carrying 143 into orbit.
...
Falcon 9.
Size
Burn time FT: 162 seconds v1.1: 180 seconds v1.0: 170 seconds
Propellant LOX / RP-1
Because most particles fired at metal foil passed straight through, rutherford concluded that.
Because most particles fired at metal foil passed straight through, Rutherford concluded that only a small area of an atom is positively charged called the nucleus.
In 1911, Rutherford's atomic model rejected J.J Thomson's model with his famous metal foil experiment.
According to Rutherford's atomic model, an atom is the smallest particle having a core nucleus.
It can not be further disintegrated and it is composed of other fundamental objects i.e. electrons, protons, and neutrons.
In the core of an atom, there is an extremely dense, minute object called the nucleus which contains positive charges, and around it, electrons revolve in circular paths called orbitals.
To put it simply, this model suggests that when electrons interacted with gold metal foil, most particles changed their path after colliding with the massive dense nucleus.
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Abigail is pushing a reluctant goat through a gate. She does 800 J of work and it takes her 4 seconds. Calculate the power Abigail generates.
A goat that is being pushed by Abigail through a gate. It takes her 4 seconds and 800 J of work.
The amount of electricity Abigail produces Identity foreclosure on identity
Identity foreclosure, or having an identity but only having ideas and characteristics they have just absorbed from their parents, friends, or group, is a characteristic of adolescence. In addition to having a distinct identity and being prone to discovering it,
Identity foreclosure young individuals in this age group also have a propensity to be influenced by a variety of factors, most notably their families and environments.
In other words, young individuals at this age are still not open to explore new possibilities and concepts; instead, they are following established norms.
Combining the urgent need to delve into one's own identity with
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