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In a model AC generator, a 501 turnrectangular coil 10.0 cm by27 cm rotates at 117 rev/min in a uniform magnetic field of0.55 T.
a) What is the maximum emf induced in the coil?b) What is the instantaneous value of the emf in the coil att = (π/30) s?Assume that the emf is zero at t = 0.c) What is the smallest value of t for which the emf will have its maximum value?
A fan at a rock concert is 50.0{\rm m} from the stage, and at this point the sound intensity level is 109{\rm dB}. How much energy is transferred to her eardrums
A heavy-duty stapling gun uses a 0.164 kg metal rod that rams against the staple to eject it. The rod is pushed by a stiff spring called a "ram spring" (k = 30071 N/m). find the speed of the ram at the instant of contact
A current of 0.307 A through your chest can send your heart into fibrillation, ruining the normal rhythm of heartbeat, how many conduction electrons pass through your chest
A child in a swing starts from rest, while pulled back at an angle of 30 degrees from vertical. Determine the velocity of the boy just before he hit the ground
a block of mass m is attached to two springs with spring constants k1 and k2 ina parallel b series
a laser having an internal loss per round-trip of 0.015 when pumped at three times threshold has an output power of 4w.
A magnetic field is directed at a 40.0 angle to a plane circular loop of wire with a radius of 26.8 cm. a) Draw a diagram showing the wire loop, compute the induced emf in the wire loop
The speed limit for both roads is 35 mi/h, and the driver of the northward-moving vehicle claims he was within the speed limit when the collision occurred.
Having found the minimum kinetic energy of an alpha particle inside a nucleus to be roughly 2.0 Mev, and given that the typical kinetic energy of an emitted alpha particle is 5.0 MeV, is actually possible for the alpha particle to have existed inside..
The magnitude of the electrostatic force between two identical ions that are separated by a distance of 5.0 10-10 m is 8.28 10-9 N. What is the charge of each ion
if a car increases its speed from 14.2 mph to 42.6 mph by what factor does the kinetic energy of the car increase?
two circular current loops lie parallel to the x-y plane and are separated by a short distance along z. the currents
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