Anyone have the answers to lesson 2 physical science semester exam b?

What is the relationship between the wavelength of a wave and it's energy?

A10 kg shark swimming at 5m/s swallows an absent-minded 0.5 kg fish that is originally at rest. what is the speed of the large fish after eating the smaller fish?

A12-g wad of sticky clay is hurled horizontally at a 100-g wooden block initially at rest on a horizontal surface. the clay sticks to the block. after impact, the block slides 7.5 m before coming to rest. if the coefficient of friction between the block and the surface is 0.65, what was the speed of the clay immediately before the impact?