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The armature of a simple ac generator has 20 circular loops of wire, each with a radius of 10 cm. It is rotated with a frequency of 60 Hz in a uniform magnetic field of 900 mT.
What is the maximum emf induced in the loops?
How often is this value attained?
If the time period in part B were cut in half, what would be the new maximum emf value?
A block of mass m = 2.70 kg slides down a 30.0° incline which is 3.60 m high. Determine how far back up the incline the smaller mass will go
A cue ball (mass = 0.145 kg) is at rest on a frictionless pool table. The ball is hit dead center by a pool stick, which applies an impulse of +1.15 N · s to the ball. Find the velocity of the second ball just after it is struck
At one instant, a mass (m = 2 kg) is at the location m and attached to one end of a spring with a spring constant ks = 60 N/m and a relaxed length L0 = 0.22 m. The origin is placed where the other end of the spring attaches to the ceiling.
You (height of your eyes above the water, 1.75) are standing 2.00 from the edge of a 2.50--deep swimming pool. You notice that you can barely see your cell phone, that went missing a few minutes before, on the bottom of the pool.
What work must a diesel engine in an 18.000kg truck do to increase its speedfrom 30. m/s to 40. m/s in 5.0 seconds? What average force did the engine exert
A simple pendulum, 1.00m in length, is released from rest whenthe support string is at an angle of 35.0°from thevertical. What is the speed of the suspended mass
A thin spherical shell of mass 0.300 kg and diameter 0.190 m is filled with alcohol. It is then released from rest on the bottom of a pool of water. Find the acceleration of the alcohol filled shell as it rises toward the surface of the water.
Michael and Misty are standing motionless together on the ice at the center of a very slippery frozen pond. what is Michael's acceleration
If the ball was hit when it was 1.2m above the ground, what horizontal distance does it travel before it lands on the building
In each cycle of its operation, a refrigerator removes 8 J of heat from the inside of the refrigerator and releases 22 J of heat into the room. How much work per cycle is necessary to operate this refrigerator.
A grating has 600 rulings per mm and is 6.0 mm wide. What is the smallest wavelenght interval that can be resolved in the third order at ? = 500 nm? How many orders can be seen? Assum normal incidence of light on the grting throughout.
A race car starts from rest on a circular track of radius 490 m. The car's speed increases at the constant rate of 0.740m/s2. find the speed of the race car
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