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A wheel is rotating freely at angular speed 400 rev/min on a shaft whose rotational inertia is negligible. A second wheel, initially at rest and with 4 times the rotational inertia of the first, is suddenly coupled to the same shaft.
(a) Find the angular speed of the resultant combination of the shaft and two wheels?
(b) Find what fraction of the original rotational kinetic energy is lost?
A block with mass m = 18.7 kg slides down an inclined plane of slope angle 18.4o with a constant velocity. How far up the incline will the block move before coming to rest
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Two farmers are standing on opposite sides of a very large empty field that is 520.6 m across. What is the temperature of the air
Consider a book of mass 10 kg on a frictionless incline that makes an angle of 40? with the horizontal. Find the acceleration of the book down the incline
Two electrons are located at two of the vertices of an equilateral triangle, one at each vertex. The length of one side of the triangle is 1.00 nm. What is the net electric field at the third vertex
The intensity of a sound produced by a point source decreases as the square of the distance from the source. What is the maximum distance at which the riveter is still audible
A shopper in a supermarket pushes a loaded 28 kg cart with a horizontal force of 12N. How far will the cart move in 3.5s, starting from rest.
A disk rotates 33.5 times in 75 seconds. What is its period and frequency? If its radius is 2 meters, what is the magnitude of its acceleration and velocity, what is the 'Centrifugal Force' that is experiences
Consider a spacecraft in an elliptical orbit around the earth. At the low point, or perigee, of its orbit, it is 300km above the earth's surface; What is the period of the spacecraft's orbit
An inductor has a 56.6-? reactance when connected to a 60.0-Hz source. What is the maximum current in the inductor
Two forces, F1 and F2 act at a point. F1 has a magnitude of 8.80N and is directed at an angle of 62 degrees above the negative X axis in the second quadrant. What is the magnitude of the resultant force
A sealed glass bottle at 27°C contains air at atmospheric pressure and has a volume of 30 mL. It is then tossed into an open fire. When the temperature of the air in the bottle reaches 200°C,
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