2 sounds playing at different frequencies, play at the same time. This results in the loudness of the sounds going up and down. What is the wave behavior

Amanometer is used to measure the air pressure in a tank. the fluid used has a specific gravity of 1.25, and the differential height between the two arms of the manometer is 34 in. if the local atmospheric pressure is 12.7 psia, determine the absolute pressure in the tank for the cases of the

Amoving electron has kinetic energy k1. after a net amount of work w has been done on it, the electron is moving one-quarter as fast in the opposite direction. (a) find w in terms of k1. (b) does your answer depend on the final direction of the electron's motion?

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?