A 1/10 scale model of an automobile is tested in a pressurized wind tunnel. The test is to stimulate the automobile traveling at 100 km/hr in air at 25 degrees C. The wind tunnel operates with air at 25 degrees C. At what pressure in the test section must the tunnel operate to have the same Mach and Reynold's numbers? The speed of sound in the air at 25 degrees C is 345 m/s.