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At a given instant an 58 mH inductor stored an energy of 86 µJ. Determine the current in the inductor at this instant? mA If the current is increasing at the rate of 100 mA/s, determine how long does it take for the energy to increase by a factor of 33 from the initial value?
If the frequencies are swept over a plusminus.gif2.00% range centered on 86.0 MHz, what is the range of wavelengths broadcast
Light enters a substance from air at 30 degrees to thenormal. It continues through the substance at 23 degrees tothe normal. What would be the critical angle for this substance
q1. a steel ball of mass m is released from rest at point p. it follows a smooth curved rail to point q and finally
The magnetic field inside a superconducting solenoid is 4.30 T. The solenoid has an inner diameter of 6.20cm and a length of 26.0 cm. evaluate the magnetic energy density in the field
It costs 2.6 cents to charge a car battery at a voltage of 12 {\rm V} and a current of 15 {\rm A} for 120 minutes. What is the cost of electrical energy per kilowatt-hour at this location
There are 2 spaceships, A and B, that approach the earth from opposite directions. Now according to an observer on spaceship A, she approaches the earth at 0.7c.
An aluminum rod is clamped one quarter of the way along its length and set into longitudinal vibration by a variable-frequency driving source. The lowest frequency that produces resonance is 4300 Hz. The speed of sound in an aluminum rod is 5100 m..
a toroid having a square cross section 7.32 cm on a side and an inner radius of 16.2 cm has 560 turns and carries a
An 80-N crate slides with constant speed a distance of 5.0 m downward along a rough slope that makes an angle of 30 ° with the horizontal
An electron ismoving at a speed of 1.2 104 m/sin a circular path of radius of 1.9 cminside a solenoid. Find the strength of the magnetic field inside the solenoid
A parallel-plate capacitor with area 0.700 m2 and plate separation of 2.00 mm is connected to a 18.00-V battery. How much charge is stored on the plates
An unstable particle at rest breaks up into two fragments of unequal mass. what is the speed of the heavier fragment
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