A fan is to produce a constant air speed of 40 ms
A fan is to produce a constant air speed of 40 m/s throughout the pipe loop shown in Fig. P8.88. The 3-m-diameter pipes are smooth, and each of the four 90° elbows has a loss coefficient of 0.30. Determine the power that the fan adds to the air.
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you are manager of a firm that produces a product according to the cost function cqi 100 50qi - 4qi2 qi3 determine
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