Select the correct answer. jack tries to place magnets on his refrigerator at home, but they won’t stick. what could be the reason? a. the body of the refrigerator isn’t made of magnetic material. b. earth’s magnetic field is interfering. c. the magnet and the body of the refrigerator have like poles. d. the refrigerator isn’t plugged into an electrical outlet.

Oxygen gas enters well-insulated diffuser at 25 lbf/in.2, 420r, with a velocity of 860 ft/s through a flow area of 1.6 in.^2. at the exit, the flow area is 12 times the inlet area, and the velocity is 19 ft/s. the potential energy change from inlet to exit is negligible. assuming ideal gas behavior for the oxygen and steady-state operation of the diffuser, determine the following: (a) the exit temperature, in r(b) the exit pressure, in lbf/in.^2 (c) the mass flow rate, in lb/s