he airplane is flying at an altitude of 6500m with a speed of 220m/s. Determine the critical velocity, and critical pressure coefficient.

One part of an inspection system in a packaging operation uses an air blast to remove defective pieces of cardboard from the conveyor belt. The blast is initiated by a sensor and clocked so that the product is in front of the blast at just the right . The product is going to be dumped onto a shelf next to the conveyor belt. Determine the speed of the air jet required to tip the cardboard off the conveyor. The density of air is 1.10 kg/m3. The cardboard has a mass of 0.10 kg and the jet has a diameter of 10 mm.

The water (density =1000 kg/m3) leaves the nozzle (area of the nozzle=D0.01 m). Assuming steady, incompressible, and neglect the weight of jet and the plate, change in elevation is also neglected. Determine the horizontal reaction force (N) on the support. Note that the stagnation tube has a fluid of specific gravity S=8.0 and the deflection of the fluid in stagnation tube is 50 cm. stagnation tube angle=40 deg Nozzle 50 cm angle =20 deg

Air (ρa = 0.08 lbm/ft3) flows through a furnace where it is burned with fuel toproduce a hot gas (ρg = 0.05 lbm/ft3) that flows up the stack, as shown in the following figure.The pressures in the gas and the immediately surrounding air at the top of the stack at point Aare equal. What is the difference Δh (in.) in water levels in the manometer connectedbetween the base B of the stack and the outside air at point C? Which side rises? Except forthe pressure drop across the furnace (which you need not worry about), treat the problem asone in hydrostatics. That is, ignore any frictional effects and kinetic energy changes in thestack. Also, you can neglect compressibility effects and assume that the density of gas isconstant.