A leaf of area 40cm2 and mass 4.5 X 10-4 kg directly faces the Sun on a clear day. The leaf has an emissivity of 0.85 and a specific heat of 0.80 kcal/kg K.
(a) Estimate the rate of rise of the leaf’s temperature.
(b) Calculate the temperature the leaf would reach if it lost all its heat by radiation to the surroundings at 20oC,
(c) In what other ways can the heat be dissipated by the leaf?