Consider a heater is attached to a block and the backside of the heater is isolated. Initially heater and blockare in equilibrium with ambient air temperature, T[infinity]. Abruptly, the power of the heater is activated. This cause sconstant heat flux at the interface between heater and block, qx′′. Required:
a. Sketch and label the relation between Tand X.
b. Sketch the heat flux at outer surface, q′′(L, t),as a function of time