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2. Finding efficiencies: In a hydroelectric generating plant, water falling over a dam spillway turns a turbine that generates electricity. a) For every 1 kg of water than falls 20 meters onto the turbines, 100 joules of electricity are generated. What is the energy input into this process? What is the energy output from this process? b) What is the efficiency of this process? C) Some of this electricity is used to light a compact fluorescent bulb. For every 18 joules of electricity provided to the bulb, 15 joules of radiant energy are produced. What is the efficiency of this process? d) What is the overall efficiency of producing electricity at this hydroelectric plant and using this electrical energy to light the bulb