2) For many years people explained how ice skates work in terms in terms of pressure. Since water is denser than ice, high pressure favors formation of liquid. Thus (according to this theory) the skater's weight on a narrow blade lowers the melting point, creating a lubrication layer of water between the blade and the solid ice. In this problem, we will explore the accuracy of this theory by estimating the pressure required to melt ice at -4 C, the temperature of ice at a typical ice rink. Throughout this analysis, assume water and ice are incompressible; such that internal energy and entropy are independent of pressure. a) Imagine that water could exist as a liquid below 0'C. Adopting a reference state of liquid H,O at 0.01*C and low pressure, construct a hypothetical path from this reference state to a liquid at I