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Stuart the student iscleaning out his desk after finals. He opens the hinged lid onhis trash can by exerting a force that makes an angle of80o with horizontal. He keeps the lid open at anangle of 40o with horizontal. The lid's massis 50 g. Since the trash can lid is symmetric, this can beconsidered a 2-D problem, and the center of mass of the lid is atits center.
a) Write out an equation forequilibrium of torques acting on the lid, around the hinge.
b) Find the magnitude of Stuart's force on the lid.
c) Find the verticalcomponent of the force the hinge exerts on the lid.
A 1.5 m cylinder of radius 1.1 cm is made of a complicated mixture materials. Its resistivity depends on the distance x from the left and obeys the formula p(x)=a+bx^2, What is the resistance of the rod
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State your answer in terms of and Use three significant figures in the numerical coefficient.
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Passengers on The Tower of Doom, a free-fall ride at Six Flags America, sit in cars that are raised to the top of a tower. How high is the tower
so hydrogen atoms have a thermal velocity of about 1000 m/s. How does the energy stored in the magnetic field compare with the kinetic energy in a given volume of space.
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