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A constant current of I = 15 A exists in a solenoid whose inductance is L = 42.2 H. The current is then reduced to zero in a certain amount of time.
(a) If the current goes from 15 to 0 A in a time of 75 ms, what is the emf induced in the solenoid?
(b) How much electrical energy is stored in the solenoid? (Consider the initial energy stored.)
(c) At what rate P must the electrical energy be removed from the solenoid when the current is reduced to 0 A in a time of 75 ms? Note that the rate at which energy is removed is the power.
A long, solid insulating cylinder of radius R = 1 mm has a uniform volume charge density and a total linear charge density of Lambda = 3:610^ -9 C/m.
A 2.1-kg block is released from rest and allowed to slide down a frictionless surface and into a spring. The far end of the spring is attached to a wall, as shown. The initial height of the block is 0.36 m above the lowest part of the slide and the s..
A student from Sidney, Australia compares the distance he obtained from the 1-st spark mark to the 20-th spark mark, What difference in the results was found
When they oppose one another, the box accelerates at 0.240 m/s2 in the direction of F2. (a) What is the magnitude of F1? (b) What is the magnitude of F2?
On a frictionless surface, a 3-kilogram cart moves at a velocity of 2 meters per second west, What is this slower speed
Two 2.0cm x 2.0cm plates that form a parallel-plate capacitor are charged to (+/-) 0.708 nC.what are the electric field strength inside and the potential difference across the capacitor if the spacing between plates.
The sun falls on a concave mirror and forms an image 4.5 cm from the mirror. If an object 22 mm high is placed 12.7 cm from the mirror, where will its image be produced.
A generator consists of one thousand loops of wire, each enclosing an area 90.cm^2, rotating 50. times per second in a uniform field of 0.15T. Determine the value of effectvie output voltage
A 1.0 mCi source of Phosphorus called P-32, a beta emitter, is imlanted in a tumor where it is to administer 36 Gy. The half-life is 14.3 days and 1 mCi delivers about 10 mGy/min/ Approximately how long should the source remain implanted?
A person pulls a 26kg suitcase using a rope attached to the suitcase at an angle of 28 degrees to the horizontal. The coefficient of static friction of the suitcase with the floor is 0.3 and the coefficient of kinetic friction is 0.20.
Light has a wavelength of 550 nm in a vacuum. It then enters a medium of index of refraction 1.70, What is the frequency of this light in the vacuum, What is its frequency in the medium
What is the maximum speed with which a 1350kg car can round a turn of radius 71m on a flat road if coefficient of static friction between tires and road is 0.40.
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