Q5 (a) Answer the following :
(a) The casing of a rocket in flight burns up due to friction. At whose expense is the heat energy required for burning
obtained? The rocket or the atmosphere?
The total energy is given by :
The burning of casing results in a reduction in the mass of the rocket. This leads to a lowering in the total energy.
Thus heat required for burning is obtained from the expenses of the rocket.
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