The rectangular tank shown here with its top at ground level is used to catch runoff water Assume that the water weighs 62 2 lb ft a How much work does it take to empty the tank by pumping the water back to ground level once the tank is full b If the water is pumped to ground level with a 5 11 horsepower hp motor work output 250 ft lb sec how long will it take to empty the tank to the nearest minute c Show that the pump in part b will lower the water level 15 ft halfway during the first 42 minutes of pumping d What are the answers to parts a and b in a location where water weighs 62 07 lb ft 62 36 lb ft a Set up an integral to find the work done W How much work does it take to empty the tank b How long will it take to empty the tank minutes Round to the nearest minute as needed c How much work does it take to lower the water level halfway t will take the pump minutes to do this work so the pump Round to the nearest minute as needed In a location where water weighs 62 07 lb ft it will take a location where water weighs 62 36 lb ft it will take TE lower the water level halfway during the first 42 minutes of pumping of work to empty the tank and it will take of work to empty the tank and it will take minutes to empty the tank minutes to empty the tank Ground level 6 ft 0 30