Pv Diagram Units. Note that this ratio κ cpcv is a factor in determining the speed of sound in a gas and other adiabatic processes. In si units p is measured in pascals v in cubic metres t in kelvins and kb 138 1023 jk1 in si units.
One for constant pressure cp and one for constant volume cv. It explains how to calculate the work done by a gas for an isobaric process iso. The classic example given is of a cylinder and a piston with some type of gas enclosed.
The area under a p v curve represents the work done on or by a gas.
Thus w p δv isobaric process. Q u w nct. It explains how to calculate the work done by a gas for an isobaric process iso. Click to see full answer similarly you may ask what is the work done in cyclic process as shown in given pv diagram.