Q 1938180002.     A child running a temperature of 101°F is
given an antipyrin (i.e. a medicine that lowers
fever), which causes an increase in the rate
of evaporation of sweat from his body. If the
fever is brought down to 98°F in 20 min what
is the average rate of extra evaporation caused
by the drug? Assume the evaporation
mechanism to be the only way by which heat
is lost. The mass of the child in 30 kg. The
specific heat of human body is approximately
the same as that of water and latent heat of
evaporation of water at that temperature is
about `580 cal g^(-1)`.