A tank is full of water. Find the work W required to pump the water out of the spout. (Use 9.8 m/s² for g. Use 1000 kg/m³ as the weight density of water. Assume that a = 4 m, b = 4 m, c = 12 m, and d = 3 m.) W = נן TALIBA

Water is transported from reservoir A to reservoir B by a pump. The diameter of pipe D1 is greater that the diameter of pipe D2 (D1>D2). The reservoir B is elevated from the ground at Z units. Draw the hydraulic gradient line and energy gradient line for the system. D2 A D1 Pump

3. Please calculate the annual electricity production of a wind farm with 20 turbines. The annual mean wind speed is 7 m/s and diameter of the blades is 20 m. If we assume power consumption of a person is 3,000 kWh, about how many people will this energy support? Annual electricity production (KWh) = K Vm³ At T Where: - - - K = 3.2 (factor based on turbine performance) Vm= annual mean wind speed (m/s) At = swept area of turbine (m2) T = number of turbines Suitable for medium- to large-scale wind turbines (> 200 m2 swept area)

3. How much work would it take to pump oil of weight density 35 lb/ft3 out of a spherical tank of radius 5 ft with a pump placed 2 ft above the top of the tank?