What is the kinetic energy of an object that is not in motion?

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 structural formula represents 4 electrons shared between two atoms?

What is the relationship between wavelength of light and the quantity of energy per photon?