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A pipe of diameter 1 m is at the top of a 20 m tall hill. Water flows through the pipe with a velocity of v = 5 m/s for a distance of 10 m before the pipe constricts to a radius of .5 m. The water then flows for another 8 m before the pipe bends downwards and travels to the ground. Find the fluid velocity at the ground level. What is the pressure difference between the lower and upper parts of the pipe?
the wavelength of a 63.7-mhz electromagnetic wave is approximatelya. 1.0 mb. 7.4 cmc. 27 md. 4.7
Two air-track gliders m1 and m2 are joined together with a light string. What is the tension in the cord joining gliders
A minivan is tested for acceleration and braking. In the street-start acceleration test, elapsed time is 8.2 s for a velocity increase from 10 km/h to 100 km/h. In the braking test, the distance traveled is 44 m during braking to a stop from 100 k..
a 100 incandescent light bulb has a cylindrical tungsten filament 33.0 long 0.430 in diameter and with an emissivity of
In a circus act at the Ringling Bros. and Barnum Bailey Circus, a human cannonball was fired from a large cannon with a muzzle speed of 87 km/h. How far from the cannon did he land
A sample of an ideal gas is at a temperature of 300 K. The rms molecular speed at this temperature is measured as 1368 m/s. Calculate the mass of a molecule of this gas
A piano wire with mass 3.45g and length 85.0cm is stretched with a tension of 31.0N. Calculate the average power carried by the wave
Two boats start together and race across a 64-km-wide lake and back. Boat A goes across at 64 km/h and returns at 64 km/h. Boat B goes across at 32 km/h, and its crew, realizing how far behind it is getting, returns at 96 km/h. Turnaround times ar..
A helium-filled balloon contains n = 1.1 moles of helium atoms at room temperature and a pressure P = 2 ? Patm (twice atmospheric pressure). How many moles are in the balloon
The tangential speed of a particle on a rotating wheel is 3.5m/s. how long will the particle take to make one revolution
A pneumatic ram has a chamber piston diameter of 150 mm and is subjected to a variable source of pressure for actuation. What pressure will be required to produce an actuation force of 2 kN (consider the cylinder to be friction less)
a horizontal rod 0.200 m long carries a current through a uniform horizontal magnetic field of magnitude 0.067 t that
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