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Chapter 13, Problem 6P
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Find the amount of coal that must be burned to sustain the generation of 30MW of electricity.

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An average American consumes approximately 105 kJ of energy per day. The average life expectancy of an American is 77.9 years. How much coal would need to be burned to provide enough energy to meet a person's energy demands if the efficiency of energy production from coal is 38%? ☐g coal
2. Consider the system described in the news: at night, when there is energy left, water is pumped from a large lake to a reservoir at 80 m above the lake level. During the day, this water is used to generate energy in a turbine located 80 m below the elevated reservoir. Considering that the water flow is always 5000 liters/s (both at the inlet of the reservoir and at the outlet) and that the pump and turbine efficiencies are 70%, what is the power (in kW) required by the pump and the power (in kW) recovered in the turbine. Data: The pipe diameter is always the same along the system (d = 0.5 m); g = 10 m/s2; γ = 9810 N/m3. Matter transport phenomena; Please make it typeable as handwriting interferes with understanding
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?
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