A ball with a mass of M=5.00kg is attached to 30.0cm long cord and it is initially at rest with the string horizontal as shown below. When the
ball is released, it hits a block with mass m=2.50kg that is at the edge of
a table. After the collision, the ball bounces back with a speed of
1.50m/s, and the block lands 4.00m from the edge of the table.
a) Find the speed of the ball right before its collision with the block.
(5 points)
b) With what velocity does the block leave the table? (5 points)
c) Find the height of the table. (5 points)
d) With what speed does the ball land on the floor? (5 points)

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

Using a wheel and axle, a farmer is trying to lift a bucket of water from the bottom of a well. the larger wheel has a radius of 40 cm compared to the axle that has a radius of 10 cm. if a bucket of water is 50 n, then how much effort is required to raise it? 12.5 n 200 n 2 n 500 n

Infrared rays have a shorter wavelength than question 11 options: x-rays. ultraviolet rays. radio waves. gamma rays.