A shock tube employs air for both the driver and driven gases. The initial pressure of the low pressure driven gas is 1 atm, that of the high-pressure driver gas is 200 atm, and the initial temperature on both sides is $300 \mathrm{~K}$. The physical arrangement and region numbering scheme are as discussed in class. Assume $\gamma=1.4$ for both the driver and driven gases. Determine: