Question
A hydroelectric power facility (see Figure 7.37) converts the gravitational potential energy of water behind a dam to electric energy. (a) What is the gravitational potential energy relative to the generators of a lake of volume $50.0\textrm{ km}^3$ ( mass = $5.00 \times 10^{13}\textrm{ kg}$), given that the lake has an average height of 40.0 m above the generators? (b) Compare this with the energy stored in a 9-megaton fusion bomb.
Question Image
1. $1.96\times 10^{16}\textrm{ J}$
2. $0.52$
Solution Video