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An ac generator supplies 20 A at 440 V to a 10,000 V power line. If the step up transformer has 150 turns in its primary coil, how many turns are in the secondary coil?
q1. two long parallel wires x and y separated by distance of 5 cm in air carry currents of 20 a and 70 a
A particle with a charge of 4.50nC is in a uniform electric field directed to the left. It is released from rest and moves to the left; What work was done by the electric force
Two charged objects experience a mutual repulsive force of 0.86N. If the charge of one of the objects is reduced by half and the distance separating the objects istripled, what is the new force? (Enter the magnitude of the force.)
The electromagnetic wave that delivers a cellular phone call to a car has a magnetic field with an rms value of 1.60 10-10 T. How much energy does this wave carry through the window
If a 49.0 N ·m torque on a wheel causes angular acceleration 17.2 rad/s2, what is the wheel's rotational inertia
In a Young's double slit experiment, if the separation between the two slits is 0.050mm, find the spacing between the first order and second order bright fringes for light with wavelength of 600nm
q1. the lines in a grating are uniformly spaced at 1520nm. analyse the angular separation of the second order bright
He has a mass of 74.0 kg and his center of gravity is located at a horizontal distance of d1 = 0.730 m from his palms and d2 = 1.10 m from his feet. calculate the forces exerted by the floor on his feet
Lightning can be studied with a Van de Graaff generator, which consists of a spherical dome on which charge is continuously deposited by a moving belt, What is the maximum potential of the dome
A metallic hoop of radius 0.5m is perpendicular to a magnetic field into the page. What direction is the current induced in the hoop
Positive point charges q and 2q are located at x = 0 and x = 3d, respectively. What is the electric field at x = d (point P)? (Use any variable or symbol stated above along with the following as necessary: k for Coulomb constant.) magnitude E = di..
Illustrate what is the average force exerted on the ball by the bat? Neglect the weight of the bat, since it is so much less than the force of the bat. Choose the direction of the incoming ball as the positive direction.
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