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Q 2.3: A calorie is a unit of heat (energy in transit) and it equals about 4.2 J where . Suppose we employ a system of units in which the unit of mass equals
, the unit of length equals
, the unit of time is
. Show that a calorie has a magnitude 4.2
in terms of the new units.
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Given,
Given new unit of mass =
(In old unit 1kg corresponded to a unit mass, but in new unit
corresponds to a unit mass)
Similarly in terms of new units,
and 