The apparatus is initially at rest on a nearly frictionless surface. then you pull the string with a constant force f. at the instant when the center of the disk has moved a distance d, an additional length w of string has unwound off the disk. (a) at this instant, what is the speed of the center of the apparatus? explain your approach. (b) at this instant, what is the angular speed of the apparatus? explain your approa
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Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?
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Sunidhi made a study chart about changes in states of matter. which headings best complete the chart?
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