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A string wound around a cylinder of 10 cm radius has has a 150 gram mass attatched. When released, the mass accelerates at 500 cm/second. what is the angular acceleration?
two stationary positive point charges charge 1 of magnitude 3.95nc and charge 2 of magnitude 1.65nc are separated by a
Calculate the velocity a spherical rain drop would achieve falling from 5.00 km, in the absence of air drag
A swimmer, capable of swimming at a speed of 1.0 m/s in still water (i.e., the swimmer can swim with a speed of 1.0 m/s relative to the water), How long does it take the swimmer to cross the river
A lead cube is 15 cm per side. The cube is released from rest in a 25-m deep pool of water. Find the gauge pressure on the cube at this depth
In one cycle, a freezer uses 780J of electrical energy in order to remove 1730J of heat from its freezer compartment at 10.0 oF. What is the coefficient of performance of this freezer
q1. a pipe open at one end has a fundamental frequency of 256 hz. a second pipeidentical to first pipe is shortened by
An 16--long bicycle crank arm, with a pedal at one end, is attached to a 23--diameter sprocket, the toothed disk around which the chain moves. A cyclist riding this bike increases her pedaling rate from 65 to 95 in 12 . What length of chain passes ov..
What least horsepower must a motor have to be able to drag a 320 box along a level floor at a speed of 1.10 if the coefficient of friction is 0.50.
A pear of 10.2 cm height is placed at a distance of 20.1 m in front of a lens that has a focal length of 26 mm. How large is the image of the pear
an unpolarized beam of light is incident on a pane of glass n 1.56 such that the reflected component coming off the
an ambulance moving at 42 ms sounds its siren whose frequency is 450hz. a car is moving in the same direction as the
a rock is sliding alone a horizontal surface with a veolcity of 8.5 ms . it eventually stops due to friction. what is the power produced by the fricition
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