Is the energy of a wave is calculated by squaring the frequency of the wave?

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

A2-kg bowling ball is 2.5 meters off the ground on a post when it falls. just before it reaches the ground, it is traveling 7 m/s. assuming that there is no air resistance, which statement is true?

An electric clothes dryer has a resistance of 8 ohms. it draws 30 a of current. what is the voltage, in volts, of the wall outlet that it is plugged into?