A stainless steel slab (k = 14.9 W/m K and = 3.95 10 -6

A stainless steel slab (k = 14.9 W/m · K and α = 3.95 × 10^-6 m²/s) and a copper slab (k = 401 W/m · K and α = 117 × 10^-6 m²/s) are placed under an array of laser diodes, which supply an energy pulse of 5 × 10⁷ J/m² instantaneously at t = 0 to both materials. The two slabs have a uniform initial temperature of 20°C. Using EES (or other) software, investigate the effect of time on the temperatures of both materials at the depth of 5 cm from the surface. By varying the time from 1 to 80 s after the slabs have received the energy pulse, plot the temperatures at 5 cm from the surface as a function of time.