A disk-shaped water of diamond IIb is the target of a very high intensity laser. The disk is 6 mm in diameter and 0.9 mm thick. The top of the disk is pulsed intermittently with 1010 W/m of energy for one microsecond. It then cools by natural convection from top of the disk until the next pulse (sides and bottom are insulated) For the convection from the top of the disk, h=14 W/m2 K and Too = 36C. If laser pulses occur 25 s apart and the disk starts at the ambient temperature, what is the temperature of the disk a) immediately after the first laser pulse? b) just before the second laser pulse? c) immediately after the second laser pulse? PC C "C