Explanation:
Power = work / time
Work = force × distance
Therefore:
Power = force × distance / time
Since the distance is the same, he would have to either increase the force he exerts or decrease the time (increase his velocity) in order to increase the amount of work done.
The correct answer is B.
Let us think of the classical theory first. In the classical theory, light is a wave that gives energy. This energy gradually helps the electron jump to a higher energy level.
In quantum theory, this is wrong; an electron cannot absorb a small amout of energy because there is not close enough state to jump to with that energy; only very specific amounts of energy lead to a change in orbital levels/ absorbance of energy. Also, each pair of energy levels has a specific energy difference that is needed from an electron so that it can move.
Hence, B is correct; all other sentences describe classical models of light-electron interactions
The brakes do
<em>W</em> = ∆<em>K</em> = 0 - 1/2 (1800 kg) (40 m/s)² = -1.44 MJ (megaJoules)
of work on the car to stop it. They apply a negative force since the braking opposes the car's forward displacement, so the car stops over a distance <em>x</em> such that
<em>W</em> = (-24.6 kN) <em>x</em> ==> <em>x</em> ≈ 58.5 m
Answer: This should be a huge help in ur answer...
Explanation: potential energy is the energy possessed by a body by virtue of its position relative to others, stresses within itself, electric charge, and other factors and kinetic energy is energy which a body possesses by virtue of being in motion.
Answer:
A.) acceleration= 55.6m/s^2
B.) acceleration of table= 5.0m/s^2
C.) More acceleration
Explanation:
A.) 100N/1.8kg= -55.6
B.) 100N÷20kg= 5
C.) Because since the table would have less mass, it would have had to accelerate more
