Anew record for running the stairs of the empire state building were set on february 4, 2003. the 86 flights, with a total of 1576 steps, was run in 9 minutes and 33 seconds. if the height gain of each step was 0.20 m, and the mass of the runner was 70.0 kg, what was his average power output during the climb? give your answer in both watts and horsepower.
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Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.
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Anew record for running the stairs of the empire state building were set on february 4, 2003. the 86...
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