Compute the minimum diameter of the duct
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An electron is in a uniform magnetic field B that is directed out of the plane of the page. When the electron is moving in the plane of the page from the top of the page to the bottom, the force on the electron is directed:
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Heated Air at 1 atm and 100 F is to be transported in a 400-ft-long circular plastic duct at a rate of 12ft^3/s. If the head loss in the pipe is not to exceed 50 ft, determine the minimum diameter of the duct.
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