Estimate the cost of the energy lost to heat per hour

Reference no: EM1345000

Q. When its 75kW engine is generating full power, a small single engine airplane with a mass of 700 kg gains altitude at a rate of 2.5 m/s. what fraction of the engine power is being used to make the air plane climb?

Q. A small city requires about 20MW of power. Suppose that instead of using high-voltage lines to supply the power, the power is delivered at 120V. Assume a two-wire line of 0.40cm -diameter copper wire, estimate the cost of the energy lost to heat per hour per meter. Assume the cost of electricity is about 10 cents per kWh.

Reference no: EM1345000

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