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A 50-kg girl rides on a giant Ferris wheel of radius 12 m that makes 2 revolutions each minute.
(a) What is the girl?s speed in m/s?
(b) What is the apparent weight of the girl at the lowest point in the ride? (Hint: Her apparent weight is equal to the force of the seat acting on her).
(c) What is the apparent weight of the girl at the highest point in the ride?
(d) If she felt weightless at the top of the ride, how fast would she be moving?
A sphere of radius R is uniformly charged to a total charge of Q. It is made to spin about an axis that passes through its center with an angular speed ω. Find the magnitude of the resulting magnetic field at the center of the sphere.
A resistor is in the shape of a cube, with each side of resistance R . Find the equivalent resistance between any two of its adjacent corners.
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Illustrate the cause of the components accelerating from rest down the conveyor.
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Evaluate maximum altitude?
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