Answer:
1. Cell
2.Cells
3.Robert Hooke
5.
1
Shown above is a wire that is carrying current in a magnetic field. The magnetic field
is coming out the plane of the page.
What is the direction of deflection of the wire?
A) Upwards
B) Downwards
C) To the left
D) To the right
Answer:
The direction of defliection of the site to the left I think ..
Please help what is the mass ??
•358.20 g
•358.3 g
•358.30 g
•358.2 g
Answer:
The answer is 358.2 g.
in which of the following conditions would a person NOT hear an echo!100 points to the first correct awnser
Answer:
Umm well a person can not hear when a it snows or maybe like a snow storm
Explanation: snow is so light you dont hear it land but you can see it
Answer: the answer is, A sound wave reaches the ear, and the reflected wave reaches the ear less than 0.1 seconds later
Explanation: PENN
define about the different types of silk found around the world
Answer:
In short, there are four types of natural silk produced around the world: Mulberry silk, Eri silk, Tasar silk and Muga silk. Mulberry silk contributes around as much as 90% of silk production, with the mulberry silkworm generally being regarded as the most important.
Metallic bonds are responsible for many properties of metals, such as conductivity. Why is this possible? (1 point)
Metals have low electronegativity, so they are conductive because they pass charges easily.
An attraction between a positive charge and a negative charge is created.
O The bonds can shift because valence electrons are held loosely and move freely.
OTwo metals bonded together are going to be more conductive than a metal bonded with a nonmetal.
Answer:
The bonds can shift because valence electrons are held loosely and more freely
Explanation:
Please give brainliest if you can,have a good day<3 :)
Answer:
The bonds can shift because valence electrons are held loosely and move freely.
Explanation: got it right
You push a shopping cart for fun with a force of 60N. If the shopping cart has a mass of 12kg, what is the
acceleration of the cart?
Answer:
[tex]\huge\boxed{\sf a = 5 \ ms^{-2}}[/tex]
Explanation:
Given:
Force = f = 60 N
Mass = m = 12 kg
Required:
Acceleration = a = ?
Formula:
F = ma
Solution:
Rearranging formula
a = F / m
a = 60 / 12
a = 5 ms⁻²
[tex]\rule[225]{225}{2}[/tex]
Hope this helped!
~AH1807Peace!a car travels in a constant speed around BCDA. Where is acceleration present
1) BC and CD
2) BC and AC
3) AB and CD
(sorry for the awk looking diagram its supposed to be all connected btw)
Answer:
3) AB and CD
Explanation:
because where velocity is constant acceleration is equal to Zero
How many bones does the baby have and why does the baby has more bones than the older ones
Answer:
300
Explanation:
when the baby are born then they would have 300 bones but when they grow they would have 206 cause when they grow that 94 bones would convert into different kind of proton and energy I guess
True or false: the largest planet in the solar system is saturn
Answer:
nope! it's actually Jupiter
Explanation:
Jupiter is your answer
every morning Tom walks along a straight road from his home to a bus stop,a distance of 160 meters.The graph shows his journey on one particular day?
Answer:
Tom walked until he was 100 metres from his home. Then, he realised that he had dropped his homework, so he turned around and went 60 metres to pick it up again. He again turned back and started to walk faster to get to the bus stop on time. He got to the bus stop 100 seconds after leaving his home and waited for the bus.
Explanation:
For water, which takes more energy, melting or evaporating?
Answer:
melting
Explanation:
that works best
Give reason for the following:
a) An inflated balloon was pressed against a wall after it has been rubbed with a
piece of synthetic cloth. It was found that the balloon sticks to the wall.
b) When an object is thrown up, it comes back to ground.
c) Mountaineers suffer nose bleeding at higher altitudes.
d) Foundations of high rise buildings are kept wide.
e) Deep sea divers or high altitude fliers wear special suits.
f) Walls of a dam are thickened near the base.
a) An inflated balloon was pressed against a wall after it has been rubbed with a piece of synthetic cloth. It was found that the balloon sticks to the wall. This is because a positive and negative electric charge is produced, therefore the balloon sticks to the wall.
b) When an object is thrown up, it comes back to ground because of gravitational attraction force of earth.
c) Mountaineers suffer nose bleeding at higher altitudes because the oxygen level decreases with increase in altitude, which the body cannot adjust.
d) Foundations of high rise buildings are kept wide because more is the area of contact, less is the pressure efforts. So, foundations are wide so as to decrease the possibility of the building from falling down.
e) Deep sea divers or high altitude fliers wear special suits so as prevent their body from being crushed by the water pressure. Since water pressure is maximum at deep seas and oceans, therefore, more is the risk of being injured.
f) Walls of a dam are thickened near the base so that the dam can handle the kinetic energy pressure and prevent itself from breaking down, which if not, can lead to flooding.
HOPE IT HELPS...
A moose runs through the woods and covers 825 m North in 118 s. What is the average velocity of the moose?
Average Velocity=Total Displacement/Total Time
[tex]\\ \sf\longmapsto Average\: Velocity=\dfrac{825}{118}[/tex]
[tex]\\ \sf\longmapsto Average\:Velocity\approx 8m/s[/tex]
wat is the difference between resultance and equilibrum
Explanation:
A resultant force is the sum of the forces on an object.
Forces are said to be in equilibrium when the resultant force is zero. This means the object will not accelerate.
Which information about an atom can a period number give you?(1 point)
how many energy levels it has
the number of valence electrons it has
how many bonds it will make
the ionic charge it forms
Answer:
How many energy levels it has
The period to which an atom belongs can tell how many energy levels it has.
The period table of an element are categorised into horizontal rows (periods) and vertical columns (groups).
Each elements falls under a particular row (i.e period) and column (i.e group).
The group number talks about the number of valence electron(s) in the outermost shell of the atom while the period number talks about the number of energy levels (or number of shells) the atom has.
This is the most reason why elements in the same group have the same number of valence electron(s) while elements in the same period have the same number of energy levels
Learn more: https://brainly.com/question/13219625
How long would it take a runner to go 5000 meters at a speed of 5 meters per second.
[tex]\\ \sf\longmapsto Speed=\dfrac{Distance}{Time}[/tex]
[tex]\\ \sf\longmapsto Time=\dfrac{Distance}{Speed}[/tex]
[tex]\\ \sf\longmapsto Time=\dfrac{5000}{5}[/tex]
[tex]\\ \sf\longmapsto Time=1000s[/tex]
explain why the rest of the group has metallic behavior but boron does not
Answer:
Since boron only has two electron shells, it is about as capable of gaining electrons as it is of losing electrons, so it behaves as a metalloid
Explanation:
Since boron only has two electron shells, it is about as capable of gaining electrons as it is of losing electrons, so it behaves as a metalloid. The other elements in this group have more electron shells, so it is much easier for them to lose their valence electrons and they behave like metals
how many elements have been discovered so far?
Answer:
The answer is...
118.
118 elements have been discovered.
Hopefully, this helps you!!
[tex]AnimeVines[/tex]
Answer:
If you mean chemical elements... there are 118 elements discovered so far.
what is the law of conservation of Momentum?
Answer:
Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant
What is the economical application of change of state of matter
Answer:
Changes of state are physical changes in matter. They are reversible changes that do not change matter's chemical makeup or chemical properties. For example, when fog changes to water vapor, it is still water and can change back to liquid water again.
1. Review the data collected in the lab and explain the movement of the cart relative to the reference point(starting point). Be sure to mention how far from the origin the cart gets in each time interval.
2. Review the data collected in the lab and determine the relationship between the position of the car relative to the reference point and the amount of time in each time interval in other words as time goes by how does the position change?
3. For this response he will show your work on calculating the speed of the car during the lab remember you are used to change and slope equation or (y^2-y^1)/(x^2-x^1).
Now let’s make connections to the data table the horizontal variable is the time which we will represent with t and the vertical variable is position which we will represent with an x using this we can rewrite the equation above to the following
(final position - initial position)/
(final time - initial time)
When the data of the position and time are available, the velocity which is the ratio of change in position to change in time which is the same as the slope of the graph of the data can be calculated. For the car, we have;
1. The car moves progressively further as the time interval increases
2. The relationship between the position of the car and the time interval is that the car moves approximately 0.02 units of distance for each change in time of 0.05
3. The speed of the car is 0.398
The reason for arriving at the above values are as follows:
1. From the given data, we have that the cart moves progressively further from the start for each time interval increase, such that the cart moves progressively further from the origin in each time interval increases
[tex]\begin{array}{|c|c|} \mathbf{ Time} & \mathbf{ Position}\\2.2&0.8963\\2.25& 0.9164\\2.3 & 0.9375\\2.35 & 0.9581\\2.4 & 0.9759\end{array}\right][/tex]
2. From the given data, we have;
At time t = 2.2, the position = 0.8963
At time t = 2.25, the position = 0.9164
The change in position for a change in time from 2.2 to 2.25 is, Δx = 0.9164 - 0.8963 = 0.0201
Similarly, for the change in time from 2.25 to 2.3, which is a change of 0.05 seconds, we have;
Δx = 0.9375 - 0.9164 = 0.0211
The next interval is 2.3 to 2.35, Δx = 0.9581 - 0.9375 = 0.0206
Therefore, the change in the distance from the origin increases by approximately 0.02 for each increase in tome by Δt = 0.05 seconds
3. The slope equation is presented as follows;
[tex]Slope = \dfrac{y_2 - y_1 }{x_2 - x_1}[/tex]
The speed of the car is given by the slope of the distance time graph, where;
The horizontal variable, x, is the time, t (x = t)
The vertical variable, y, is the position, x (y = x)
Based on the given assignment of the variables to the x, and y, variables, we have;
[tex]Slope = Speed = \dfrac{y_2 - y_1 }{x_2 - x_1} = \dfrac{x_2 -x_1}{t_2 - t_1} = \mathbf{\dfrac{Final \ position - Initial \ position }{Final \ time - Initial \ time}}[/tex]
Plugging in the values in the table, we have;
[tex]Speed = \dfrac{Final \ position - Initial \ position }{Final \ time - Initial \ time} = \mathbf{\dfrac{0.9759 - 0.8963 }{2.4 - 2.2}} = 0.398[/tex]
The speed of the car = 0.398
Learn more about distance time graph here:
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the distance between neha and diya's house is 200 km. a car take 2 hours to cover this this distance. find the speed of the car.
Answer:
27.8m/s
Explanation:
V= d/t
S. I unit of distance (displacement) is m
S. I unit of time is seconds
V= d/t
V = (200 x 1000)m / (2 x 60 x 60)s
V= 27.8 m/s
A student drops a feather off the top a building. The feather averages 1.5m/s while
fluttering to the ground.
Determine all unknowns.
The acceleration with which an object falls through a fluid decreases as the speed of the object increases under gravity, to the point where the speed becomes constant, which is known as the terminal speed of the object
The unknown parameters are the mass of the feather, the density of the air, the feather's projected area and the coefficient of drag
The reason the above selected parameters are the correct unknowns is as follows;
The known parameter;
The speed of the feather the student drops off the building's top = 1.5 m/s
The required parameter;
The unknown parameters
Method;
Determine the terminal velocity parameters of the feather
The terminal velocity, [tex]\mathbf{V_t}[/tex], of an item is the maximum steady speed the item reaches as it falls through a fluid. The terminal velocity of the feather is given by the following equation
[tex]Terminal \ velocity, V_t = \mathbf{\sqrt{\dfrac{2 \cdot m \cdot g}{\rho \cdot A \cdot C_d} }}[/tex]
Where;
[tex]\mathbf{V_t}[/tex] = Terminal velocity = The constant speed of the feather
m = Mass of the feather
g = Gravitational acceleration
ρ = Air density
A = The feather's projected area
[tex]C_d[/tex] = Drag coefficient
The average speed of the feather = 1.5 m/s = The feathers typical or most common speed = The terminal velocity of the feather, [tex]\mathbf{V_t}[/tex];
Plugging in [tex]\mathbf{V_t}[/tex] = 1.5 m/s gives;
[tex]V_t = 1.5 \ m/s = \mathbf{\sqrt{\dfrac{2 \cdot m \cdot g}{\rho \cdot A \cdot C_d} }}[/tex]
Therefore, the unknown parameters with regard to the feather falling are the parameters that are to be specified, including;
The mass of the featherThe density of air at the locationThe feather's projected areaThe drag coefficientLearn more about terminal velocity here:
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seharitat -The distance of a panet from the earth is 2.5 x 10^7 km and the gravitational force between them them is 3.82 x 10^18 N. Mass of the planet and earth are equal, each being 5.98 x 10^24 Kg. Calculate the universal gravitation constant.
We know
[tex]\boxed{\sf F=G\dfrac{Mm}{r^2}}[/tex]
[tex]\\ \sf\longmapsto G=\dfrac{Fr^2}{Mm}[/tex]
[tex]\\ \sf\longmapsto G=\dfrac{3.82\times 10^{18}(2.5\times 10^7)^2}{(5.98\times 10^{24})^2}[/tex](M=m)
[tex]\\ \sf\longmapsto G=\dfrac{3.82\times 10^{18}(6.25\times 10^{14})}{35.7\times 10^{48}}[/tex]
[tex]\\ \sf\longmapsto G=\dfrac{23.87\times 10^{32}}{35.7\times 10^{48}}[/tex]
[tex]\\ \sf\longmapsto G=0.668\times10^{-16}[/tex]
[tex]\\ \sf\longmapsto G=6.68\times 10^{-15}[/tex]
A playground merry-go-round spins about its axis with negligible friction. A child moves from the center of the merry-go-round to the rim. For this system, indicate which of the following quantities change.
A. Potential energy
B. Angular momentum
C. Mass
D. Moment of inertia
E. Angular speed
F. Rotational kinetic energy
Answer:
B
Explanation:
In this process on merry go round there is not any external torque so angular momentum will be conserve. Mass is always conserved.
in the accompanying,circuit a battery with an emf of 24 v is connected in series to resistor x and two identical light bulbs connected in parallel.each light bulb is Marked 6 V and 3 w .will the ammeter reading increase or decrease if another identical light bulb is connected in parallel to the existing two and another resistor is connected in series with x? explain your answers
Answer:
Explanation:
When you put another light bulb in parallel with the other two, you are not going to get something for nothing. The current drain on the battery has to go up.
Let the lightbulbs have a a resistance of r. Two light bulbs with make the resistance go to 1/2 r. The lower the resistance, the more the current. When you put the third light bulb in, the resistance will go to 1/3 r. So the current goes up.
If you put another resistor in series with x, the resistance adds. The total series resistance is 2x. The current reading will go down. The higher the resistance the lower the current.
State which type of variable is plotted on the x-axis
and which type is plotted on the y-axis.
Answer:
Often the independent variable is plotted on the x-axis - and example might be time (an experiment where time is measured by a watch or an independent mechanical device)
The dependent variable is often plotted on the y-axis - and example here might be the velocity or the acceleration,
It may be the responsibility of the experimenter to determine the value of the dependent variable by some type of measurement
On earth, the acceleration due to gravity is (A. 32 ft/sec2
B. 60 miles/hour).
Metallic bonds are responsible for many properties of metals, such as conductivity. Why is this possible?(1 point)
Metals have low electronegativity, so they are conductive because they pass charges easily.
Metals have low electronegativity, so they are conductive because they pass charges easily.
Two metals bonded together are going to be more conductive than a metal bonded with a nonmetal.
Two metals bonded together are going to be more conductive than a metal bonded with a nonmetal.
An attraction between a positive charge and a negative charge is created.
An attraction between a positive charge and a negative charge is created.
The bonds can shift because valence electrons are held loosely and move freely.
Conductivity is possible in metals because metallic bonds can shift due to the fact that valence electrons are held loosely and move freely.
WHAT ARE METALLIC BONDS:
Metallic bonds are bonds that holds metals together. In metallic bonding, electrons are shared between positive metal ions. The electrons that flow in metals are delocalized, hence, are able to move freely. These free moving electrons are responsible for the high conductivity that metals exhibit.Therefore, conductivity is possible in metals because metallic bonds can shift due to the fact that valence electrons are held loosely and move freely.
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valence electrons are held loosely and move freely.
Explanation:
plz help i will mark brainlyist.
describe how gravitational force is related to mass and distance
compare the magnitude and range of the four basic forces—gravitational, electromagnetic, weak nuclear and strong nuclear
Answer:
please mark me brainliest
Explanation:
Gravitational force -an attractive force that exists between all objects with mass; an object with mass attracts another object with mass; the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects.
The Four Fundamental Forces of Nature are Gravitational force, Weak Nuclear force, Electromagnetic force and Strong Nuclear force. The weak and strong forces are effective only over a very short range and dominate only at the level of subatomic particles. Gravity and Electromagnetic force have infinite range.