A heat pump uses a 5-hp compressor while extracting 500 Btu of energy from groundwater each minute. What is the COP (a) if the purpose is to cool the groundwater and (b) if the purpose is to heat a building

What is the heat treatment of metals? what is the benefit of it? why and how it's useful? answer in details, do not write by hand.

Apiston-cylinder device contains 0.1 m3 of liquid water and 0.9 m3 of water vapor in equilibrium at 800 kpa. heat is transferred at constant pressure until the temperature of water reaches 350 °c. determine (a) the quality of water at the initial state (b) the work associated with this process, (c) the heat associated with this process.

Abarometer contains mercury with a density of 13600 kg/m3. atmospheric conditions are 95.8 kpa and 20 °c at 20 °c, the vapor pressure of the mercury is 0.000173 kpa. the column of mercury will rise to a height of most nearly. select one: a)- 0.38 m b)- 0.82 m c)- 0.48 m d)- 0.72 m