1. The upstream and downstream temperatures across a normal shock wave in air are measured and found to be 306.3 and 717.6 K, respectively. Determine the upstream and downstream Mach numbers and the pressure ratio across the shock wave.
2. The upstream and downstream static pressures across a normal shock wave in air are measured and found to be 0.500 and 3.00 MPa, respectively. Determine the upstream and downstream Mach numbers and the temperature ratio across the shock wave.