For your cabin in the wilderness, you decide to build a primitive refrigerator out of styrofoam, planning to keep the interior cool with a block of ice that has an initial mass of 27.0 kg . the box has dimensions of 0.500 m ×0.850 m ×0.500 m . water from melting ice collects in the bottom of the box. suppose the ice block is at 0.00 ∘c and the outside temperature is 17.0 ∘c .
if the top of the empty box is never opened and you want the interior of the box to remain at 7.00 ∘c for exactly one week, until all the ice melts, what must be the thickness of the styrofoam?