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Two amateur entomologists are observing the movement of a beetle traveling in a straight line across a driveway. Every , they measure the distance that the beetle has traveled. Afterward, they create a graph of the beetle's motion, with distance on the -axis and time on the -axis. What does the slope of their graph represent?
Air enters the first compressor stage of a cold air-standard Brayton cycle with regeneration and intercooling at , , with a mass flow rate of . The overall compressor pressure ratio is 10 , and the pressure ratios are the same across each compressor stage. The temperature at the inlet to the second compressor stage is . The compressor stages and turbine each have isentropic efficiencies of and the regenerator effectiveness is . For , find, (a) the thermal efficiency of the cycle. (b) the back work ratio. (c) the net power developed, in . (d) the rates of exergy destruction in each compressor stage and the turbine stage as well as the regenerator, in , for