Circuit a will get turned on. Wood, silver and yarn are all insulators.
Answer:
-10837 J
Explanation:
The law of conservation of momentum states that the initial total momentum is equal to the final total momentum, so:
where
m = 22.3 g = 0.0223 kg is the mass of the bullet
is the initial velocity of the bullet
M = 1 kg is the mass of the block
is the initial velocity of the block
is the final velocity of the bullet
is the final velocity of the block
Solving for we find
The total kinetic energy before the collision is:
And the total kinetic energy after the collision is:
So, the change in kinetic energy is
Answer:
A) If you halve the wavelength, the electromagnetic radiation energy will double.
B) The energy of the electromagnetic radiation will halve if you halve the wavenumber.
C) When the frequency of the light is doubled, its energy will double.
Explanation:
The function for the light frequency is given as
The energy supplied to each electron is doubled by halving the wavelength, nearly doubling its kinetic energy by two after it is free from the metal. It is important to remember that for a given period of time, the number of electrons ejected will remain constant.
Cheers
A) The acceleration of this car is zero
Because, the question states that it is traveling at a constant velocity, meaning that it has no acceleration at all.
The coefficient of restitution is a measure of the interaction of the ball with the material of the ground. Since the ground is too solid to move (usually), or give way, the energy of the ball-ground system must be conserved in the main. Some of the energy is released as sound waves but the rest is given to, or reflected back to the ball and it follows the path of reflection. When the ball is dropped vertically it returns along the same path. So the force is actually the potential energy created by dropping converted to kinetic energy on collision with the ground. This is the origin of the force making it bounce.