a bucket is lifted out of a well by a small gas powered engine and the buckets potential energy changes from 2.0 kJ to 110 kJ in 2.2 seconds what power did the engine use on the bucket

Water is siphoned from a large tank and discharges into the atmosphere through a 50-mm diameter tube. the end of the tube is b = 2.1 m below the tank bottom which is a = 7.4 m deep, and viscous effects are negligible. determine the maximum height h over which the water can be siphoned without cavitation occurring. atmospheric pressure is 101.4 kpa, and the water vapor pressure is 1.79 kpa (absolute)