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A hand-driven grinding wheel is a uniform 62-kg disk with a 41-cm radius. It has a handle of negligible mass 64 cm from the rotation axis. A compact 26-kg load is attached to the handle when it is at the same height as the horizontal rotation axis. Ignore the effects of friction.
(a) Find the initial angular acceleration of the wheel.
rad/s2
(b) Find the maximum angular velocity of the wheel.
rad/s
Two cylindrical rods have the same mass. One is made of silver (density = 10 500 kg/m3), What is the ratio (silver-to-iron) of the lengths
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when 105 mL of water at 22 C is mixed with 68mL of water at 95 C, what is the final temperature? suppose no heat is lost to the surroundings and density of water is 1 g/mL.
An ideal air conditioner operating on a Carnot cycle absorbes heat Q2 from a house at temperature T2 and discahrges Q1 to the outside at temperature T1, consumng elecrical energy E.
A person starts from rest at the top of a large, frictionless, spherical surface, and slides into the water below, At what angle does the person leave the surface
Calculate the y-component of the magnetic force.
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