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A potter's wheel having a radius 0.48 m and a moment of inertia of 10.4 kg · m2 is rotating freely at 48 rev/min. The potter can stop the wheel in 4.5 s by pressing a wet rag against the rim and exerting a radially inward force of 65 N. Find the effective coefficient of kinetic friction between the wheel and the wet rag.
Given the capacitors, C1=2muF, C2=1.5 muF and C3=3muF, what arrangement of parallel and series connections with a 12-V battery will give the min voltage drop across the 2muF capacitor? What is the min voltage drop?
A positive charge of .0001096 C experiences a force of .159 N when located at a certain point. What is the electric field magnitude at that point
High-speed photos of a 240 flea jumping vertically show that the jump lasts 1.4 and involves an average vertical acceleration of 100, What's the change in the flea's momentum during its jump
A 2.0 N force is applied to the plunger of a hypodermic needle. The diameter of the plunger is 1.2 cm and that of the needle is 0.30 mm. With what force does the fluid leave the needle
A block with a mass of 10.0 g and a charge of +1.11 x 10-5 C is placed in an electric field with x component Ex = 2.51 x 103 N/C, y component Ey = -528 N/C, find the magnitude of the electrostatic force on the block
A charged particle with charge +5.0 ?C is initially at rest. It is accelerated through a potential difference of 500 V. What is the kinetic energy of this charged particle
A convex spherical mirror, whose focal length has a magnitude of 19.0 cm, is to form an image 12.4 cm behind the mirror. What is the magnification of the mirror
A 105 kg fullback is running at 4.8 m/s to the east and is stopped in 0.75 s by a head-on tackle by a tackler running due west. Calculate the average force exerted on the tackler
The blades of a kitchen blender rotate counterclockwise at 2.2×104 rpm (revolutions per minute) at top speed. find the average angular acceleration of the blades
A 8 g bullet has a speed of 180 m/s and embeds itself into a 500 g block. What is the speed of the block after the collision
A village maintains a large tank with an open top, containing water for emergencies. The water can drain from the tank through a hose of diameter 6.70 cm. find the friction force exerted by the nozzle on the stopper
A 640-g hollow ball 19cm in diameter is suspended by a wire and is undergoing torsional oscillations at a frequency of 0.78 Hz
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