If a coin has a mass of 29.34g and drops from a height of 14.7 meters, what is its loss in gravitational potential energy? show work.

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)

Sound travels slower in colder air that it does in warmer air. make a claim about the effect of air temperature on the speed of sound. support your claim with evidence