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1) A coil of wire with 80 turns and a cross-sectional area of .03m^2 lies perpendicular to a magnetic field of magnitude 1.5T. The coil is rapidly removed from the magnetic field in a time of .1s
a) what is the magnetic flux through the coil?
b) what is the average value of the voltage induced in the coil?
c) what is the average value of the voltage induced in the coil if it is rapidly put back into the field in a time of .1s?
2) A transformer has 20 turns of wire on its primary coil and 80 turns of wire on its secondary coil.
a) is this a step-up or step-down transformer?
b) if an altering voltage of 110V is applied to the primary, what is the voltage induced in the secondary?
c) if 6 A of current are supplied to the primary coil, then what is the effective currrent in the secondary coil?
At one instant a bicyclist is 49.0 m due east of a park's flagpole, going due south with a speed of 14m/s. Then 35.0 s later, the cyclist is 49.0 m due north of the flagpole, going due east with a speed of 14m/s.
A car was seen driving off the edge of a cliff at an angle of 10 ° above the horizontal. The cliff is 95m high and the car impacted the ground at a distance of 156m from the base of the cliff. What is the speed of the car.
A block of mass M is attached to a spring (spring constant k) which is attached to a wall. what is the amplitude of the resulting simple harmonic motion
A molecule of DNA (deoxyribonucleic acid) is 2.08 µm long. The ends of the molecule become singly ionized: negative on one end, Determine the effective spring constant of the molecule
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A lamp (R = 146 omegacap.gif), an electric heater (R = 25 omegacap.gif), and a fan (R = 51 omegacap.gif) are connected in parallel across a 115 V line. What power is expended in the heater
Loretta made it known just because someone comes from poverty does not mean this is where you have to live your whole life. She was an amazing women and an inspiration to many.
What does it means when I say that a light truck and a heavy truck have the same momentum, What is renewable energy
Write a Matlab program that converts from COEs (classical orbital elements) to position and velocity vectors
A cement block accidentally falls from rest from the ledge of a 74.8-m-high building. When the block is 18.4 m above the ground, a man, 2.10 m tall, looks up and notices that the block is directly above him. How much time, at most, does the man have ..
A uniform plank of length 4.3m and weight 236N rest horizontally on two supports, with 1.1m of the plank hanging over the right support. To what distance x can person who weighs 450N walk on the overhanging part of the plank before it just begins ..
Four protons and four electrons are located inside a pyramid and are separate from each other, What is the net value of electric flux through the surface of the pyramid
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