An elevated water tower is used to supply water to a city. to make water available at a pressure of 400 kpa at a ground level location within the city, what should be the height of water surface inside the tower? at what absolute pressure water will be available at another location which is 20 m below the first one?

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

If you were designing a bumper for a car, would you prefer it to exhibit elastic or plastic deformation? why? consider the functions of a bumper in both a minor "fender-bender" and a major collision.

The higher the astm grain size number, the finer the gran is. a)-true b)-false