4. Mixing and Turbofan Nozzles Consider the \"mixer\" shown below. Two air streams enter the mixer, and are combined into a single exhaust stream (3). The first air stream (1) enters the box with a stagnation pressure of 32 psia and a stagnation temperature of 1340 OF. The second air stream (2) enters with a stagnation pressure of 6.4 psia and a stagnation temperature of 55 F. Also, the mass flow rate of stream (2) is five times that of stream( ), mz sml. Ij |. ID"