Extracted text: During a camping trip, you see a 30-cm-diameter plastic pipe carrying water from a high reservoir to a stream in the valley. The difference in height between the reservoir's free surface and the stream is 70 meters. You come up with the concept of using this water to generate electricity. Create a power plant that gets the greatest electricity out of this resource. Also, look at the impact of electricity production on water discharge rates. What discharge rate produces the most power?