An object has a -8 c charge. the object breaks into two pieces. one piece has a charge of -2 c. what is the exact charge (in c) of the other piece? do not include units with your answer.

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.