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You have a wire of length L = 1.9 m for making a square coil of a dc motor. The current in the coil is I = 1.6 A, and the magnetic field of the motor has a magnitude of B = 0.38 T. Find the maximum torque exerted on the coil when the wire is used to make
(a) a single-turn square coil and
(b) a two-turn square coil.
What is the least coefficient of friction between tires and road that will allow cars to negotiate the turn without sliding off the road?
A playground merry-go-round of radius R = 1.20 m has a moment of inertia I = 265 kg · m2, What is the new angular speed of the merry-go-round
Assume the system rotates in the yz plane about the x axis with an angular speed of 2 rad/s. Find out the moment of inertia of the system about the x axis.
A 116 g Frisbee is 28 cm in diameter and has about half its mass spread uniformly in a disk, and the other half concentrated in the rim. What is the magnitude of the torque, assumed constant, that the student applies
If, on other hand, she first kicks it to player 2, who then kicks it into the net, the ball undergoes two successive displacements, y and x. What are the magnitude and direction of x and y.
Treat a Boron atom as 5 protons at the origin, 2 electrons spread uniformly on a shell (radius 13.2[pm] centered on the origin) , 2 more electrons spread on a shell (radius 105.8[pm] centered on the origin), and its outer electron at x= 211.6 pm.
A space probe speeding toward the nearest star moves at 0.28c, What frequency is received on earth
two tuning forks oscillating coherently and in phase at 1200Hz are separated by 0.35m, Calculate the angles of minimum intensity
A charged particle is injected at 143 m/s into a 0.0855-T uniform magnetic magnetic field perpendicularly to the field. What is the charge-to-mass ratio of this particle
Particle A and particle B are held together with a compressed spring between them. When they are free, the spring pushes them apart and they after that fly off in opposite directions, free of the spring.
Electrons are located at the points (0,1), (3,4), (1, 2). Find the net electric field at the origin
A moving particle encounters an external electric field that decreases its kinetic energy from 9910 eV to 6840 eV as the particle moves from position A to position B.
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