1 point A rectangular tank that is 5 feet long 3 feet wide and 3 feet deep is filled with a heavy liquid that weighs 70 pounds per cubic foot In each part below assume that the tank is initially full Your answers mu clude the correct units You may enter lbf or lb ft for ft lb a How much work is done pumping all of the liquid out over the top of the tank 4725 b ft b How much work is done pumping all of the liquid out of a spout 2 feet above the top of the tank 11025 bf c How much work is done pumping two thirds of the liquid out over the top of the tank 4200lbf d How much work is done pumping two thirds of the liquid out of a spout 2 feet above the top of the tank 8400lbf