13 INVENTOS CREADOS POR MEXICANOS, INDICANDO : NOMBRE DEL INVENTO
NOMBRE DEL INVENTOR
FECHA
ESTADO DE LA REPUBLICA DONDE NACIO
SI NO SABEN NO RESPONDAN O DENUNCIO DOY CORONA

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.

Coiled springs ought to be very strong and stiff. si3n4 is a strong, stiff material. would you select this material for a spring? explain.

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