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A disk with moment of inertia I1 rotates about a frictionless vertical axle with angular speed wi. A second disk, this one having moment of inertia I2 and initially not rotating, drops onto the first disk. Because of friction between the surfaces, the two eventually reach the same angular speed wf.
(a) calculate wf.
(b) calculate the ratio of the final to the initial rotational energy?
A 20.00 kg wood ball hangs from the 1.10 long wires. The maximum tension the wire can withstand without breaking is 600 N. A 0.710 kg projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectil..
q. a cannon tilted upward at 33 fires a cannonball with a speed of 99. at that instant what is the component of the
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What is the average translational kinetic energy of nitrogen molecules at 1400 K
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A bottle containing 2 kg of water at a temperature of 15°C is placed in a refrigerator where the temperature is kept at 5°C. How much heat is transferred from the water to cool it to 5°C
A uniform sphere with mass 57.0kg is held with its center at the origin, What is the magnitude of the net gravitational force due to these objects on a third uniform sphere with mass 0.510kg placed at the point x= 4.00m, y = 0
A cylindrical container with a cross-sectional area of 66.2 holds a fluid of density 816 kg/m3, and bottom of the container the pressure is 118 kPa. What is the depth of fluid.
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