A cylindrical resistor element on a circuit board dissipates
0.15 Wof power in an environment at 40°C. The resistor
is 1.2 cm long, and has a diameter of 0.3 cm. Assuming heat to
be transferred uniformly from all surfaces, determine (a) the
amount of heat this resistor dissipates during a 24-h period,
(b) the heat flux on the surface of the resistor, in W/m2, and
(c) the surface temperature of the resistor for a combined convection
and radiation heat transfer coefficient of 9 W/m2 · °C.