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Trucks can be run on energy stored in a rotating flywheel, by an electric motor getting the flywheel up to its top speed of 200 rad/s. One such flywheel is a solid, uniform one cylinder with a mass of 500 kg and a radius of 1 m.
a) What is the kinetic energy of the flywheel after charging?
b) If the truck uses an average power of 8.0 kW, for how many minutes can it operate among charging?
A computer to be used in a satellite must be able to withstand accelerations of up to 24 times the acceleration due to gravity, What is the minimum amplitude of vibration that must be used in this test
a converging lens with focal length of 20cm is located 10 cm to the left of a diverging lens having a focal length of
A train is en route from Chicago to New York at 110km/h when the engineer spots a cow on the track. How far was the train from the cow when the engineer first applied the brakes
Find out the angle theta_1 through which the flywheel will have turned during the time it takes for it to accelerate from rest up to angular velocity omega_1.
A white billiard ball with mass mw = 1.43 kg is moving directly to the right with a speed of v = 3.42 m/s and collides elastically with a black billiard ball with the same mass mb = 1.43 kg that is initially at rest.
two stretched cables both experience the same stress. the first cable has a radius of 3.1x10-3 m and is subject to a
A 450 kg dragster accelerates from rest to a final speed of 120 m/s in 400 m, What is its average power output in watts and horsepower if this takes 7.30 s
Calculate the magnitude of the angular momentum of the Venus in a circular orbit around the sun. The Venus has mass 4.87×1024 kg
Orb spiders make silk with a typical diameter of 0.15 millimeter. A typical large orb spider has a mass of 0.50 kilogram. If this spider suspends itself from a single 12 centimeter long strand of silk, determine by how much will the silk stretches
Two tugboats pull a disabled supertanker. Each tug exerts a constant force of 1.90×106 N, one at an angle 12.0 degrees west of north, What is the total work done by the two tugboats on the supertanker
A 65.0-kg person throws a 0.045 0-kgsnowball forward by a ground speed of 30.0 m/s. A second person, with a mass of 60.0 kg, catches the snowball. Both people are on skates. The first person is initially moving forward by a speed of 2.50 m/s, and the..
Water is flowing at 100 lbm / s in a circular drain pipe of 1 m in diameter. This 1 meter diameter pipe comes to an abrupt constriction when the diameter suddenly reduces to 1.5 feet, Find the velocity of the water in both pipes
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