Current Attempt in Progress Remember to use absolute pressures and temperatures. Check significant figures throughout the calculation. A stream of air enters a 6.50cm ID pipe at a velocity of 40.0m/s at 27.0C and 1.80 bar (gauge). At a point downstrream, the air flows through a 5.75cm ID pipe at 160.0C and 1.23 bar (gauge). What is the velocity of the gas at the downstream point? [Assume all velocities are averages over the pipe cross section.]