A rectangular tank that is 2 meters long, 3 meters wide and 3 meters deep is filled with a rubbing alcohol that has density 786 kilograms per cubic meter. In each part below, assume that the tank is initially full, and that gravity is 9.8 meters per second squared. Your answers must include the correct units.

(a) How much work is done pumping all of the liquid out over the top of the tank?
units

(b) How much work is done pumping all of the liquid out of a spout 2 meters above the top of the tank?
units

(c) How much work is done pumping two-thirds of the liquid out over the top of the tank?
units

(d) How much work is done pumping two-thirds of the liquid out of a spout 2 meters above the top of the tank?
units