While on the launch pad, the space shuttle rocket boosters and external fuel tank held about 3.79 × 106 pounds of fuel. This amount of fuel was necessary to propel the space shuttle into an orbit 300 km above Earth. In order to escape gravity at the surface of Earth, the chemical energy in the fuel was converted to which type of energy?

Suppose that a cylindrical tank 6 meters high with a radius of 2 meters is filled to the rim with water. the tank is buried so that the top of the tank is 1 meter below ground level. the space above the tank is not filled with water. calculate how much work needs to be done by a pump to pump the water out of the tank up to ground level. (the water weighs 9,800 newtons per cubic meter.)