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A circular loop (area = 0.20 m2) turns in a uniform magnetic field with B = 0.13 T. At an instant when the angle between the magnetic field and the normal to the plane of the loop is π rads and is decreasing to π/2 rads during 0.5 second, find what is the magnitude of the emf induced in the loop?
A refrigerator has a coefficient of performance of 2.10. Each cycle it absorbs 3.40 104 J of heat from the cold reservoir. How much mechanical energy is required each cycle to operate the refrigerator?
One end of a wire is attached to a ceiling, and a solid brass ball is tied to the lower end. The tension in the wire is 120 N. What is the radius of the brass ball
An engine absorbs 1.74 kJ from a hot reservoir at 277°C and expels 1.21 kJ to a cold reservoir at 27°C in each cycle. How much work is done by the engine in each cycle
A series ac circuit contains a 190 ohms resistor, a 14.0 mH inductor, a 4.50uF capacitor, and an ac power source of voltage amplitude 45.0 V operating at an angular frequency of 360 rad/s
A cannon ball is fired at an angle of 22 above horizontal with an initial speed v0 = 300 m/s, reaching a maximum height h before hitting the ground. What is the maximum height h reached by the ball
You have a summer job working for a major manufacturer of audio components. Find what strength magnetic field will give this force
a steam pipe is covered with 1.50 cm thick insulating material with a thermal conductivity of 0.200
A circular saw blade 0.250m in diameter starts from rest. In 7.50s , it reaches an angular velocity of 140rad/s with constant angular acceleration. Find the angular acceleration and the angle
q1. points a and b have electric potentials of 320 and 160 respectively. when an electron released from rest at point a
a crane on a dock lifts an 1107kg container 28m, swings it out over the deck of a freighter, and lowers the container into the hold of the freighter, how much work is done by the crane on the container
Jack was exposed to fast neutrons; he received a radiation dose of 220rem rem on part of his hand, affecting 28.0grams of tissue. How much radiation did Jack receive
suppose that a 70.0kg box is pulled by 400N firce at an angle of 30 degree to the horizontal. The coefficient of sliding friction is 0.500. find the acceleration of the box
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