Abaseball flying through the air has kinetic energy because of its motion. true or false?

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.

What happens when a rubber rod is rubbed with a piece of fur?

What can you increase the strength of an electromagnet by