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1. Measurements on a prototype nozzle using air produce inlet and exit temperatures of 70.0°F and 60.0°F, respectively, while the exit velocity is 325 ft/s. Determine the nozzle's efficiency and velocity coefficient.
2. An air diffuser has inlet and exit isentropic stagnation pressures of 3.50 and 3.10 MPa, respectively. The inlet velocity is 300. m/s and the inlet static temperature is 27.0°C. Determine the diffuser efficiency, pressure recovery coefficient, and exit static temperature, if the air leaves the diffuser with a negligible velocity.
A hot-air balloon has just lifted off and is rising at the constant rate of 2.2 m/s . Suddenly one of the passengers realizes she has left her camera on the ground.
At night, the surface temperature over land drops by 10 K (to 300 K), the surface temperature over the ocean remains the same (306 K), and the temperature at 0.5 km over both land and ocean drops by 5 K (to 300 K for both). Discuss the stability o..
A 97-mW vertically polarized laser beam passes through a polarizer whose polarizing angle is 15° from the horizontal. What is the power of the laser beam when it emerges from the polarizer?
Two tiny conducting spheres are identical and carry charges of -20.7 μC and +51.7 μC. They are separated by a distance of 2.39 cm. What is the magnitude of the force that each sphere experiences?
questiona girl of mass mg is standing on a plank of mass mp. both are initially at rest on a frozen lake that
Capacitors are used in many applications where one needs to supply a short burst of relatively large current. Approximately what is the resistance of the lamp if the current reaches 5.0% of its original value in 1.8 ms
an m1400-kg car is on a horizontal dry road that has a coefficient of static friction 0.8. the coefficient of kinetic
A 3.1 micro Coulomb charge hangs from a string midway between two sheets and makes an angle of 10 degrees with the vertical, what is the tension in the cord
The piston in the cylinder head of a locomotive has a stroke (twice the amplitude) of 0.66 m. If the piston moves with simple harmonic motion with an angular frequency of 180 rev/min, what is its maximum speed?
A person walks 28.5o north of east for 3.62 km. What total distance would he have walked
What fraction of the power radiated by the sun is intercepted by the planet Neptune? The radius of Mercury is 2.48 107 m
The membrane surrounding a living cell consists of an inner and an outer wall that are separated by a small space. What is the magnitude of the electric field within the cell membrane
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