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Two uniform cylinders, each of weight W = 14 lb and radius r = 5 in., are connected by a belt as shown. If the system is released from rest when t = 0, determine
(a) the velocity of the center of cylinder B at t = 3 s,
(b) the tension in the portion of belt connecting the two cylinders.
A current of 3.6 Amp flows through a wire. How many electrons pass a particular point on the wire in 17 s
In a ballistics test, a 25 g bullet traveling horizontally at 1200 m/s goes through a 35-cm-thick 350 kg stationary target and emerges with a speed of 750 m/s. What average force does it exert on the target
A dentist uses a mirror to examine a tooth that is 0.75 cm in front of the mirror. The image of the tooth is formed 11.0 cm behind the mirror. Determine the mirror's radius of curvature
A block slides down an inclined plane, starting from rest and being pushed with a constant acceleration of 5.20 m/s2 over a distance of 20.4 cm. Find the total time the block is in motion
question1loudspeaker of mass 25.0kg is suspended a distance of h 2.40m below the ceiling by two cables that make equal
A physics professor is pushed up a ramp inclined upward at an angle 35.0^\circ above the horizontal as he sits in his desk chair that slides on frictionless rollers. The combined mass of the professor and chair is 84.0kg . He is pushed a distance ..
A certain wire stretches 0.980 cm when an outward force of magnitude F is applied to each end. The same force is applied to a wire of the similar material however with tree times the diameter and with three times the length. By how much will the seco..
The electron orbiting the proton in the hydrogen atom is at a distance of 5.3×10-9 m. What is the ratio of the electric force to the gravitation force between these particles
A 50.0 kg box is resting on a horizontal floor. A force of 250 N directed at an angle of 26.0 degrees below the horizontal is applied to the box. What is the minimun coeffiecient of static friction
Waves are sent down a 2.00m long string pinned down at both ends setting up standing waves. The equation for these waves is given by, y(x,t) = (0.040m) sin (2pi multiplied by x) cos (200pi mulitplied by t) Find a) the amplitude of the original wave..
An oven may be regarded as a cube, each side 1.2m long. The oven stands on thin legs and the heat transfer through each of the six faces is identical.
Assume a cyclist rides a certain high-speed motorcycle. He reaches top speed and then coasts up a hill. the maximum height reached with the motorcyclist is 250m.if 255000J of kinetic energy is dissipated by friction, what was the initial speed of the..
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