Thermoregulation problem, Thickness of skin is 11 mm, the initial water temp is 22 degrees Celsius, the water's final temperature is 12 degrees celsius, and the final ice temperature of -20 celsius. Which this information, how can you calculate K? the equation given is H=k x T1-T2/d, and H=4.18J/(c*g)x100xdeltaT I know H=4.18Kx100x(22-12)=4180 and then I don't know what to do next for H=k x T1-T2/d, I don't know what values are T1-T2 if it's supposed to be (initial water temperature - final water temperature) or (change in water temperature - final ice temperature).