Which is true about surface waves?

The disturbance is only parallel to the motion of the wave.

The disturbance is only perpedicular to the motion of the wave.

The disturbance does not have a specific motion.

The disturbance is in a circular motion.

Asample of a gaseous substance changes into a liquid

A100-watt light bulb illuminates a solar cell. the electricity from the solar cell operates a water pump that delivers 1 watt of power. what is the efficiency of the system?

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg