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Water at a pressure of 13 atm, at street level, flows into a building at 3m/s through a 6 cm diameter pipe. The pipe tapers down to a 2 cm diameter by the top floor 50 m above. The density of water is 1,000 kg/m^3. Calculate the water pressure and velocity on the top floor?
A playground merry-go-round has a disk-shaped platform that rotates with negligible friction about a vertical axis. how fast will the disk be turning
What is ratio of the applied force
Some asteroid fragments are large enough to not completely burn up in the atmosphere and they end up on the surface of the Earth. What is the chief cause of radioactivity
1. List real-life communications systems that use the wideband modulations. 2. Explain the reasons in which binary RF digital modulations are more power efficient than M-ary binary digital modulations.
Suppose a car starts from rest and completes a straight line, 1/4 mile (402 meter) race in 12.3 seconds. Assume the acceleration to be constant.
question1a sealed well-insulated 2000ml thermos bottle with negligible heat capability is completely empties - a
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1040 Hz, What is the speed of the bird, expressed as a percentage of the speed of sound
A boat with a speed of 10 m/s in still water, tries to cross a river with a current flow 2.0 m/s and is a 100 meeters wide. how far down river does it land
A torsion pendulum is made from a disk of mass m = 5.7 kg and radius R = 0.67 m, What is the torsion constant of this pendulum
You are applying a anti reflecting coating to your plane. You don't want to be seen by radar which uses 'light' of wavelength 2cm. determine the minimum thickness of this coating
A 17-kg dog is standing on the edge of a stationary, frictionless turntable of rotational inertia 95kg?m2 and radius 1.70m. What fraction of a full circle does the dog's motion make with respect to the ground
An ice machine converts 10 degree celsius water to 0 degree celsius ice. The ice machine has a COP of 3 and consumes elec
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