Now a 0.2-cm-thick, 12-cm-high, and 18-cmlong aluminum plate (k = 237 W/m•K) with 864 2-cm-long aluminum pin fins of diameter 0.25 cm is attached to the back side of the circuit board with a 0.02-cm-thick epoxy adhesive (k 5 1.8 W/m•K). Determine the new temperatures on the two sides of the circuit board