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2.3. A calorie is a unit of heat or energy and it equals about4.2 J where 1J-1 kg m's2. Suppose we employ a sys-tem of units in which the unit of mass equals o kg, theunit of length equals β m, the unit of time is ys. Showthat a calorie has a magnitude 4.2 α-1 β-2 in terms ofthe new units.

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