In a turning operation on stainless steel with a hardness of 200 HB, the cutting speed is 200 m/min, feed is 0.25 mm/rev, and depth of cut is 7.5 mm. How much power will the lathe draw in performing this operation if its mechanical efficiency, E, is 90%. The specific energy value for the material is known to be 2.8 N-m/mm3

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.

Heat is added to a piston-cylinder device filled with 2 kg of air to raise its temperature 400 c from an initial temperature of t1 27 cand pressure of pi 1 mpa. the process is isobaric process. find a)-the final pressure p2 b)-the heat transfer to the air.

The drive force for diffusion is 7 fick's first law can be used to solve the non-steady state diffusion. a)-true b)-false