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During a 78-ms interval, a change in the current in a primary coil occurs. This change leads to the appearance of a 7.8-mA current in a nearby secondary coil. The secondary coil is part of a circuit in which the resistance is 12 ?. The mutual inductance between the two coils is 3.2 mH. What is the change in the primary current?
questiona 1000-kg car moves at an utmost speed so that it does not skid off the 50-m radius level track. if coefficient
a basketball leaves a players hands at a height of 2.20m above the floor. the basket is 2.90m above the floor. the
At t=0, a proton is moving with the speed of 5.5×10^5 m/s at an angle of 30 degrees from the x-axis, as shown in the figure. A magnetic field of magnitude 1.5 T is pointing in the positive y-direction. What would be the y-coordinate of the proton ten..
Two 24 cm focal-length converging lenses are placed 16.50 cm apart. An object is placed 39.0 cm in front of one. Where would the final image formed by the second lens be located.
q1. during an all-night cram session a student heats up a one-half liter 0.50 x 103 m3 glass pyrex beaker of cold
a centrifuge is a device in which a small container of material is rotated at a high speed on a circular path. such a
A 7.11-kg box is sliding across the horizontal floor of an elevator. find the kinetic frictional force that acts on the box
The work required to stretch a certain spring from anelongation of 4cm to 5cm is 30.5J. What is the work required to increase the elongation from 5cm to 6cm
What angle does the rope make with the horizontal.
question1an electron accelerated from rest through a voltage of 400 v enters a region of constant magnetic field. if
An electron moves to the right with a speed of 0.91c relative to the laboratory frame. Find the speed of the proton relative to the laboratory frame
As a function of time, the velocity of the football can be written as . (If the acceleration of an object is constant, its average acceleration is the same for all time periods.) Calculate the average acceleration vector of the football for the ti..
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