Encyclopedia > Rpm

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Short for revolutions per minute, rpm is a unit for rotational speed. Gramophone or analogue disc records typically rotate with 33, 45, or 78 rpm. Aircraft motors can rotate with 8000 rpm. An automobile's motor typically makes between 1000 and 4000 rpm.

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North Lindenhurst, New York

... living together, 12.2% have a female householder with no husband present, and 21.9% are non-families. 17.7% of all households are made up of individuals and 7.6% hav ...

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