The system is released from rest with the spring initially stretched 2.5 in. Calculate the velocity v of the cylinder after it has dropped 1.5 in. The spring has a stiffness of 8.6 lb/in. Neglect the mass of the small pulley.

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.

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Burgers vector is generally parallel to the dislocation line. a)-true b)-false