An ideal gas undergoes two processes in a piston-cylinder device as follows: 1-2 Polytropic compression from T1 and P1 with a polytropic exponent n and a compression ratio of r=V1/V2. 2-3 Constant pressure expansion at P3=P2 until V3=V1. (a) Sketch the processes on a single P−v diagram. (b) Obtain an expression for the ratio of the compression-to-expansion work as a function of n and r. (c) Find the value of this ratio for values of n = 1.4 and r = 6.

Determine the maximum r-value of the polar equation r =3+3 cos 0

Suppose you have a box. which of these is not necessarily a true statement regarding the relationship between the force applied to the box, the work done on the box, and the distance the box is moved? a. if the box is not moved, no force is being applied to the box. b. if no force is applied to the box, no work is done on the box. c. if work is done on the box, then a force is applied to the box. d. if work is done on the box, then the box is moved a distance.

Which accounts for an increase in the temperature of a gas that is kept a constant volume