A leaf of area 44 cm2 and mass 4.5 10-4 kg directly faces the Sun on a clear day. The leaf has an emissivity of 0.86 and a specific heat of 0.8 kcal/kg·K.
(a) Estimate the rate of rise of the leaf's temperature.
__ C°/s
(b) Calculate the temperature the leaf would reach if it lost all its heat by radiation (the surroundings are at 20°C).
__ °C
(c) In what other ways can the heat be dissipated by the leaf?