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Q. A uniform magnetic field B is confined to the square region with side of length 2L. A square loop of wire with side of length L is moving throughout a region at a constant speed v. let t=0 be the time at which loop first encounters the magnetic field. The resistance of the loop is R. plot a graph of the induced emf in the wire vs. time graph with an appropriate values of E and t in th terms of L, v, and B.
what will be the induced emf magnitude in the short coil. A 77.9 kg fireman slides down a 4.13 m pole by applying a frictional force of 343 N against the pole with his hands. If he slides from rest, how fast is he moving once he reaches the ground.
You are listening a soft music with a sound level of 50 dB. A subway train passes by whose sound level is 90 dB. What is total intensity level of the combined sound in dB.
Find out the minimum horizontal velocity magnitude of the acceleration of the blocks
A rectangular container measuring 24 cm 48 cm 55 cm is filled with water. What is the mass of volume of water in kilograms.
A child exerts a tangential 47.6 {N} force on the rim of a disk-shaped merry-go-round with a radius of 2.10 {m}. If merry-go-round starts at rest and acquires the angular speed of 0.080 {rev/s} in 3 {s}, what is its mass.
A crate of mass 150.0 kg lies at rest on a horizontal storage room floor. The coefficient of static friction between crate and floor is 0.72, and the coefficient of kinetic friction is 0.85. (You may suppose g = 10.0m/s2).
Two ocean liners, each with a mass of 38,000 metric tons, are moving on parallel courses, 92 m apart. What is the magnitude of the acceleration of one of the liners toward the other due to their mutual gravitational attraction? Treat the ships as par..
The leg and cast weigh 177N (w1). Find out the weight w2 and the angle α required so that no force is exerted on the hip joint by the leg plus cast.
A 75-kg person sits on a 3.7-kg chair. Each leg of the chair makes contact with the floor in a circle that is 1.5 cm in diameter. Find out the pressure exerted on the floor by each leg of the chair; assume the weight is evenly distributed.
A 69 kg boy and a 40 kg girl use an elastic rope while engaged in a tug-of-war on an icy, frictionless surface. If the acceleration of the girl toward the boy is 3.0 m/s2, find out the magnitude of the acceleration of the boy toward the girl.
A potter's wheel having a radius 0.55m and a moment of inertia 12kg•m2 is rotating freely at 51 rev/min. The potter can stop the wheel in 7 s by pressing a wet rag against the rim and exerting a radially inward force of 67N. Find out the effectual co..
Two stationary positive point charges, charge 1 of magnitude 3.45 nC and charge 2 of magnitude 1.50 nC, are separated by a distance of 52 cm. An electron is released from rest at the point midway between the two charges, and it moves along the lin..
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