At hoover dam, the distance the water effectively falls before encountering the electric generators depends on the water levels in lake mead. assume that the water intakes are effectively 175 m above the electric generators. how much water must pass through the generators to power 2 million 35-w las vegas lightbulbs for 6.0 minutes? (hint: this is a conservation of energy problem. all the energy comes from the falling water. consider the electric generators to be 100% efficient.) give your answer in kilograms, and enter your answer in the format *.**e**. kg to imagine how much water this is, recall that 1.0 kg of water occupies a volume of 1.0 liter.