This image shows the direction of the flow of water through a constricted pipe. which of the following happens as you move from position a to position b in the water pipe?

a. the velocity of the water decreases.
b. the pressure of the water decreases.
c. the flow rate of the water decreases.
d. the density of the water increases.

He latent heat of vaporization for ethyl alcohol is 854 j/g. the amount of energy, rounded to the nearest whole number, needed to change 5.20 grams of ethyl alcohol from a liquid to a gas is

Arefrigerator uses r-134a as the working fluid and operates on the ideal vapor-compression refrigeration cycle except for the compression process. the refrigerant enters the evaporator at 120 kpa with a quality of 34 percent and leaves the compressor at 70°c. if the compressor consumes 450 w of power, determine (a) the mass flow rate of the refrigerant, (b) the condenser pressure, and (c) the cop of the refrigerator. (0.00644 kg/s, 800 kpa, 2.03)

Based on this activity, is kinetic energy always transformed into potential energy?