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A uniform spherical shell of mass M = 17.0 kg and radius R = 0.470 m can rotate about a vertical axis on frictionless bearings (see the figure). A massless cord passes around the equator of the shell, over a pulley of rotational inertia I = 0.250 kg·m2 and radius r = 0.0990 m, and is attached to a small object of mass m = 2.40 kg. There is no friction on the pulley's axle; the cord does not slip on the pulley. What is the speed of the object when it has fallen a distance 0.573 m after being released from rest? Use energy considerations.
From what height did the student fall? Suppose that the only force acting on him all through the impact is that because of the ground.
The base surface has an emissivity of e 0.7, and is maintained at 800 K. Determine the net rate of radiation heat transfer to the base surface from the top and side surfaces.
A 115- resistor, a 0.237-µF capacitor, and a 5.56-mH inductor are connected in series to a generator whose voltage is 29.0 V. The current in the circuit is 0.130 A. Because of the shape of the current-versus-frequency graph (shown), there are two ..
a mass oscillates on a horizontal frictionless surface as a result of being attached to a spring with k25 nm. it is
The escape speed from a distant planet is 45 km/s. If the acceleration of gravity on the planet surface is 12.5 m/s2, What is the radius of the planet
What is the minimum rate of rotation, in revolutions per minute, required for the spheres to contact the cylinder wall?
A lens (positioned at x=1.5) and a lit object in the shape of an upright arrow is to the left by the lens. The object is positioned (x = 0.5) such that it results into a virtual image. The position of the virtual image is not given. A converging l..
A man's leg can be thought of as a shaft of bone 1.2m long. If the strain is 1.3x 10^-4 when the leg supports his weight, by how much is his leg shortened
q1. an airplane is flying with a velocity of 60.0 at an angle of 22.0 above the horizontal. when the plane is a
A scaffold that weighs 400 N supports two painters, one 500 N and the other 400 N. The reading in the left scale is 800 N. What is the reading in the right hand scale
At an altitude of 260 m above the Earth's surface, the field is only 105 N/C. Calculate the charge density of the air (assumed constant).
You push with a horizontal force of 48.0 against a 23.0 box, pressing it against a rough wall to hold it in place. What is the friction force on the box
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