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An ideal gas is to flow isentropically from a large tank where the air is maintained at a temperature and pressure of 59 °F and 80 psia to standard atmospheric discharge conditions. Describe in general terms the kind of duct involved and determine the duct exit Mach number and velocity in ft/s if the gas is air.
About once every 30 minutes, a geyser known as Old Faceful projects water 18.0 m straight up into the air. Use g = 9.80 m/s2, find the speed of the water when it emerges from the ground
forces acting on the arm of a person lifting a dumbbell. the force f is the force pulling on the hand due to the weight
The Electric potential at the center of a square is -2V when a charge of -q is located at one of the square's corner. What is the electric potential at the square's center when identical charges of +q are placed at the other three corner's of t..
1) A 170g wood block is firmly attached to a very light horizontal spring, as shown in the figure. The block can slide along a table where the coefficient of friction is 0.23. A force of 29N compresses the spring 12cm. - If the spring is released ..
The huge volcanic eruption on the island of Krakatoa, Indonesia, in 1883 was heard on Rodrigues Island, How long did it take (in seconds) for the sound to travel to Rodrigues
Using Newton's laws find the normal force on the object. Determine the force of kinetic friction on the object
Calculate the pressure exerted on the skin by an acupuncture needle of radius 0.100 mm applied with a force of 4.40 N
What is the expected number of impacts on the space shuttle during a two week mission at a 400 km circular orbit altitude and 51.6 degree inclination by debris particle greater than 4mm in size
A high-speed flywheel in a motor is spinning at 450rpm when a power failure suddenly occurs. How many revolutions would the wheel have made during this time
A flying squid (family Ommastrephidae) is able to "jump" off the surface of the sea by taking water into its body cavity and then ejecting the water vertically downward. How high in the air will the squid rise
A man has to install an instrument on top of the mast of his sailboat. He uses a bosun's chair to hoist himself up. With what acceleration does the man move up
a 146 g ball moving at -23 ms is hit by a bat. the ball moves in the opposite direction at 14 ms. how long did it
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