The velocity, or speed, of light is determined by the density of the medium it is traveling through. The more dense a medium is, the slower light will travel. As a result, your answer should be something like this:
1. Solid
2. Liquid
3. Gas
4. Vacuum
Answer:a.They all travel the same distance.
B. Car F
Explanation:
A. For the three cars, we have that
ƒ = μN and since
N = F(g) = mg,
therefore ƒ = μmg.
Considering Inertia as a property of matter which increases with linearly. The more massive a car is, the more inertia carrying it forward, but also the more friction required in trying to stop it, so the two will cancel out and all three cars will stop at same distance
B.For the three cars, we have that,
w = Fd.
The force acting on the cars as they move forward is friction,
therefore w = ƒd. Since ƒ = μN and N = F(g) = mg, then,
ƒ = μmg.
Combining friction equation with the work equation gives us
w = μmgd. As μ, g, and d will be constant between equations, the greatest work done by friction will come from the car with the greatest mass.
Answer:
The kinetic energy when the film vault landed is 12744000J.
Explanation:
The kinetic energy is defined as:
(1)
Where m is the mass and v is the velocity.
By means of equation 1, the kinetic energy of the film vault when it landed can be determined
But
Hence, the kinetic energy when the film vault landed is 12744000J.
Answer:
<em>The pressure given by the water at the bottom is 58,800 Pa</em>
Explanation:
<u>Pressure Exerted by a Column of Liquid
</u>
The pressure P exerted by a column of liquid of height h and density ρ is given by the hydrostatic pressure equation:
P = ρgh
Where ρ is the density of the liquid, g is the acceleration of gravity g=9.8m/s^2, and h is the height of the column of liquid.
The height of water in a well is h=6 m. The density of water is a known quantity:
Calculating P:
P = 1,000*9.8*6
P = 58,800 Pa
The pressure given by the water at the bottom is 58,800 Pa
Answer:
heat
Explanation:
because heat the other of transferring energy