4. Your grandfather has a cottage at the lake and needs to install a pump to feed water to the house. He plans to pump water at night to fill a storage tank he has installed next to the cottage. The pipes and fittings he has chosen to use for the installation are listed in the table below. The pumps in the pumping catalog your grandfather has are rated by their value of horsepower (hp). What is the minimum horsepower rating of a pump does capable of providing a flow rate of 5 gallons per minute of water at the tank? Assume the pump efficiency is 65% and that the pipe is PVC, i.e. completely smooth. SOR type Spor 40 wa 10 pump Globe 1 100 Torch Lake 1 th