In the previous problem, the strip heater acts to guard against heat losses from the wall to the outside, and the required heat flux q”o depends on chamber operating conditions such as q and T∞,i. As a first step in designing a controller for the guard heater, compute and plot q”0 and T(0) as a function of q for 200 < q < 2000 W/m3 and T∞,i = 30, 50, and 70°C.