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A potter's wheel-a thick stone disk of radius 0.500 m and mass 125 kg-is freely rotating at 50.0 rev/min. The potter can stop the wheel in 6.00 s by pressing a wet rag against the rim and exerting a radially inward force of 76.0 N. Find the effective coefficient of kinetic friction between the wheel and rag.
Two rods of equal length L = 1.51 m form asymmetric cross. The horizontal rod has a chargeof Q = 100.0 C, and the vertical rod a charge of-Q = -100.0 C. The charges on both rods are distributed uniformly along their length.
A 200g ball on a 70-cm-long string is swung in a vertical circle about a point 200 cm above the floor. What was the tension in the string an instant before it broke
The graph below shows the rotational behavior of an object with moment of inertia of 16 kgm. Calculate the magnitude of the constant average torque that acted on the system
An entertainer, when performing a bubble trick, forms one bubble inside another. What is the gauge pressure in the inner bubble
questionan elevator of mass 2268 kg rest at a level of 7.62 m above a base of elevator shaft. it is raised to 76.2 m
Find the difference of the initial and the final masses for the decay 137N?126C+p. The atomic masses of 137N, 126C,
A simple pendulum is swinging back and forth through a small angle, its motion repeating every 1.13 s. How much longer should the pendulum be made in order to increase its period by 0.34 s
A 0.010kg bullet is fired straight up at a falling wooden blockthat has a mass of 2.0kg. The bullet has a speed of 750m/swhen it strikes the block. The block originally was dropped from rest from the top of a building and had been falling for atim..
q1. a proton moves perpendicular to a uniform magnetic field b at 1.6 multiplied by 107 ms and experiences an
A stone is thrown vertically upward at a speed of 16 m/s at time t = 0. At what time are the two stones at the same height
The photoelectric effect experiment is often carried out by using a mercury light source to illuminate a particular surface. What is the work function of this surface
question a car is moving on a at horizontal circular track of radius 120 m. the speed of the car is constant 15ms . the
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