What happens to the amplitude of the resultant wave when two sound waves with equal amplitude constructively interfere? A. It is half the amplitude of each wave. B. It is twice the amplitude of each wave. C. It is the mean of the amplitudes of the two waves. D. It is the square of the amplitude of each wave. E. It is zero.

In a system, when potential energy decreases, then entropy also decreases. true false

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and