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A typical coal-fired power plant burns 270 metric tons of coal every hour to generate 2.9x10^6...

A typical coal-fired power plant burns 270 metric tons of coal every hour to generate 2.9x10^6 MJ of electricity. 1 metric ton= 1000 kg; 1 metric ton of coal has a volume of 1.5m^3. The heat combustion is 28 MJ/kg. Assume that all heat is transferred from the fuel to the boiler and that all the work done in spinning the turbine is transformed into electrical energy. 

a) Suppose the coal is piled up in a 10m x 11m room. a) How tall must the pile be to operate the plant for one day? b) What is the power plant’s thermal efficiency? Can anyone please show me how to solve these two, starting with Kinematics Equations?

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