As the phase difference between two interfering waves changes from 180° to 0°, the amplitude of the resultant wave A) Decreases
B) Increases
C) Remains the same

Awater-filled u-tube manometer is used to measure the pressure inside a tank that contains air. the water level in the u-tube on the side that connects to the tank is 5 ft above the base of the tank. the water level in the other side of the u-tube (which is open to the atmosphere) is 2 ft above the base. determine the pressure within the tank.

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

What is friction? how does it affect the motion of an object?