How thick must the flywheel be
A 1.0-m radius flywheel is to be made from steel in the form of a solid disc. If the flywheel when turning at 60 rpm store as much energy as a 100-W lamp uses in one minute, how thick must the flywheel be if the density of steel is 7880 kg.m-3.
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The sound of the rustling leaf is also right at the threshold of hearing of the harvest mouse. How far is the harvest mouse from the leaf?
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If the maximum cycle temperature ( at the heater exit ) is 1000 C and the minimum cycle temperature is 100 C ( at the cooler exit ) , what is the theoretical limit of the cycle efficiency?
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Why is the Reynolds Number for onest of turbulence given by Re > 2000 in fully flowing pipes, and Re > 500 in partly flowing pipes and onther open channels?
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