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A sphere of mass 10.0 kg and radius 0.45 m is subject to an angular acceleration about its center of 2.00 rad/s2. A cylinder of identical mass and radius is subject to the same angular acceleration.
a. By how much will the angular momentum of the sphere change in 10 s?
b. By how much will the angular momentum of the cylinder change in 10 s?
c. How much torque did it take applied for 10 s to change these angular momenta, respectively?
d. What are the final respective rotational kinetic energies, assuming both the objects began at rest?
Draw a motion diagram for the train. Assume that the train is moving toward the right and starts to slow down at t = 0. The separation of each dot represents an elapsed time of one second.
A hot air heating system rated at 84,000 Btu/hr has an efficiency of 65%. The furnace fan can move 225 ft3 of air per minute. If the air enters the furnace at 60.0°F, determine the temperature of the outlet air.
An electric motor rotating a workshop grinding wheel at a rate of 9.90 x 10^1 rev/min is switched off. Assume the wheel has a constant negative angular acceleration of magnitude 1.70 rad/s2.
A meteor that falls to earth from a great distance has a speed of 11 km/s. In class we found that the temperature of an iron meteor is 290,000K. We assumed all of the energy heats the meteor and none of it is transferred to the surroundings.
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X rays diffract from a crystal in which the spacing between atomic planes is .200nm. what is the angle of the first-order diffraction
A 60.0-kg runner expends 360 W of power while running a marathon. determine the volume of bodily fluid (assume it is water) lost per hour
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Sharon has a mass of 60 kg and is standing on a giant skateboard that is initially at rest and has a mass of 30kg. what is the speed of the skateboard
An object explodes and breaks into 2 pieces. Piece 1 has twice the mass of piece 2. Which piece has more momentum
A particle has an acceleration of 6.19 m/s^2 for 0.350 s . At the end of this time the particle's velocity is 9.26 m/s What was the particle's initial velocity?
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