Consider a wing in a high-speed wind tunnel. at a point on the wing, the velocity is 850 ft/s. if the test-section flow is at a velocity of 780 ft/s, with a pressure and temperature of 1 atm and 505°r, respectively, calculate the pressure coefficient at the point.

Describe one experiment in which the glass transition temperature and melting temperature of a totally amorphous thermoplastic material can be determined. show the relevant experimental results in a diagram which should be properly annotated with the two temperatures clearly marked. what is likely to happen to the curve in the diagram if the amorphous polymer is replaced by a thermosetting type?