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Home  >>  AIMS  >>  Class11  >>  Physics  >>  Units and Measurement
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A calorie is a unit of heat energy and it equals about 4.2 J, where 1 J = 1 kg $m^2\: s^{–2}$. Suppose, we employ a system of units in which the unit of mass equals $ \alpha $ kg, the unit of length equals $ \beta $ m and the unit of time is $ \gamma $ s. Calorie has a magnitude of ______in terms of the new units.

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$ \alpha^{-1} \beta^{-2} \gamma^2 $
Hence (D) is the correct answer.
answered Jun 3, 2014 by thanvigandhi_1

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