Physics

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A fossil-fuel power plant that generates 1000MW of electrical power discharges 1600MJ per second as waste heat into the river. A)At what rate(in MW) is thermal energy obtained fromt the burning of coal? B)What is the thermal efficiency(power output/heat input) of the plant? C) If the river flow is at 5x10^8 kf of water per hour, what is the temperature rise of the river due to the thermal polution?

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