(a) show that in a joule-thomson expansion, temperature change occurs if no (av/0t)p v/t (b) show that ду иср 3d т -1. in the region of moderate pressures, the equation of state of 1 mol of gas may be written pv rt b'p+ c'p2, where the second and third virial coefficients b' and c' are functions of t only (c) show that, as the pressure approaches zero, db dт — в'. иср — т (d) show that the equation of the inversion curve is c b'- t(db'/dt) p=c t(dc' |dt)

Review multiple-concept example 7 in this chapter as an aid in solving this problem. in a fast-pitch softball game the pitcher is impressive to watch, as she delivers a pitch by rapidly whirling her arm around so that the ball in her hand moves in a circle. in one instance, the radius of the circle is 0.626 m. at one point on this circle, the ball has an angular acceleration of 66.1 rad/s2 and an angular speed of 12.6 rad/s. (a) find the magnitude of the total acceleration (centripetal plus tangential) of the ball. (b) determine the angle of the total acceleration relative to the radial direction.