Difference between xrays and radio wave

A14 kg rock starting from rest free falls through a distance of 5.0 m with no air resistance. find the momentum change of the rock caused by its fall and the resulting change in the magnitude of earths velocity. earth mass is 6.0 * 10^24 kg. show your work assuming the rock earth system is closed.

Describe how the motion of a spring being pushed forward and backward is similar to the motion of air particles in a sound wave.

What happens to the vapor pressure of a substance when its surface area is increased at constant temperature?