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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?
A 2 kg ball has been thrown vertically upward. If we ignore the air resistance, what are the direction and size of the net force acting on the ball while it is traveling upward?
Starting from rest,a 10 cm diameter compact disk takes 3.0 s to reach its operating angular velocity of 2200 rpm. assume that the angular acceleration is constant.
What is constant speed V
A gamma ray (a high-energy photon) can produce an electron (e?) and a positron (e+) of equal mass, What minimum gamma-ray energy is required to accomplish this task
While john is travelling along an interstate highway, he notices a 160 mile marker as he passes through town. Later John passes another mile marker, 119.
compute the force exerted by the man, the work done by the man on the piano, the work done by the friction force, the work done by the force of gravity, and the net work done on the piano.
what is the thermal kinetic energy in 1kg of oxygen gas at 20 degrees celsius? What fraction of this energy is translational
Physicist Robert Adair, once appointed the "official physicist to the National League" by the commissioner of baseball, What is the difference in wavelength of these sounds
A diver, below the surface of a lake, notices that no light appears to be coming toward her greater than the angle è, what is the angle è
A large tanker truck can carry 30 ton of liquid. (a) What volume of water can it carry? (b) What volume of gasoline can it carry.
A monatomic ideal gas containing 7.95 moles at a temperature of 235 K are expanded isothermally from a volume of 1.23 L to a volume of 4.44 L. Calculate the heat flow into or out of the gas
An orchid grower hears that the temperature is expected to fall below freezing overnight, so she puts a large barrel in her orchid greenhouse, How much heat left the water during the night
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