The turbine section in a jet engine receives gas (assume air) at 1200 k, 800 kpa with an ambient atmosphere at 80 kpa. the turbine is followed by a nozzle open to the atmosphere, and all the turbine work drives a compressor. find the turbine exit pressure so that the nozzle has an exit velocity of 800 m/s.

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 force on a cutting tool are 2600n vertically downward and 2100 horizontal. determine the resultant force acting on the tool and the angle at which it acts.