Find the speed of sound for air
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How large a force must be applied to a squirt gun to have 0.1 kg/s water flow out at 20 m/s? What pressure inside the chamber is needed?
The exit flow is at 1200 K, 100 kPa, through the exit nozzle of 0.4 m diameter. Neglect the fuel flow rate and find the net force (thrust) on the engine.
If the flow through the nozzle is reversible and adiabatic, determine the velocity and kinetic energy per kilogram of water leaving the nozzle.
Find the nozzle exit area, the required pressure out of the pump, and the horizontal force needed to hold the cannon.
Find the speed of sound for air at 100 kPa at the two temperatures 0oC and 30oC. Repeat the answer for carbon dioxide and argon gases.
A jet flies at an altitude of 12 km where the air is at -40oC, 45 kPa, with a velocity of 1000 km/h. Find the Mach number and stagnation temperature on nose.
A contracted to deliver "200 pairs of Firestone tires of assorted sizes" to B by January 1.
Draw a diagram of a perfectly inelastic demand curve. Suggest an example of a good for which demand might be perfectly elastic.
You run the only lemonade stand in Central Park. If people don't buy lemonade. What does this experience tell you about the demand for lemonade in Central Park?
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