If an improvement creates no significant change in a product’s performance, then it is a(n) design improvement

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.

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

The proportional limit is always greater than the yield strength for a material. a)-trune b)- false