C. As a substance freezes, its temperature does not change. How does the potential energy of the molecules of the substance change as a result of the heat
released? What type of energy must decrease in order for the temperature to
decrease? (4 points)

Avertical clean glass piezometer tube has an inside diameter of d = 1 mm and is used to measure pressure in a horizontal pipe carrying water as shown. due to pressure in the pipe, the water at 20c rises into the tube to a height h. if the water pressure in the pipe is p = 500 pa gauge, estimate the height h: (a) without considering surface tension (b) with surface tension (capillary) effects. the contact angle  can be assumed at 30 deg