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A square wire loop with 1.5 m sides is perpendicular to a uniform magnetic field, with half the area of the loop in the field. The loop contains an ideal battery with emf = 19 V. If the magnitude of the field varies with time according to B = 0.045 - 0.87 t, with B in teslas and t in seconds, what are
(a) the magnitude and
(b) the direction of the net emf in the circuit? Answer either 0 for clockwise or 1 for counterclockwise.
A 100kg crate is being pushed across a horizontal floor by a force P that makes an angle of 30 below the horizontal. The coefficient of kinetic friction is 0.20. What must be the magnitude of P, so that the net work completed by it and the kinetic..
A professor's office door is 0.9 wide, 2.2 high, 4.2 thick; has a mass of 23 , and pivots on frictionless hinges. A "door closer" is attached to door and the top of the door frame. while the door is open and at rest, the door closer exerts a torqu..
A small solid ball is released from rest while fully submerged in a liquid and then its kinetic energy is measured when it has moved 5 cm in the liquid. What is the density of the ball
Compute the index of refraction of the gas
Starting from rest, a 2.2x10-4 kg flea springs straight upward. While the flea is pushing off from the ground, What is the flea's speed when it leaves the ground
You are driving just behind a second car and both of you are moving at a speed 58mi/h. What is the minimum safe distance
A nuclear power plant has an electrical power output of 2000 MW and operates with an efficiency of 34%. what is the rise in temperature of the flowing water
q1. two bicycle tires are set rolling with the equivalent initial speed of 5.0 ms along a long straight road and
a certain second-order reaction has a rate constant of 1.10times10-3 at 27 and an initial half-life of 226. what is
.250 kg ball is dropped to the floor from a height of 1.0 m and upon rebounding, reaches a height of .60 m. What is the impulse delivered to the ball by the floor?
In the figure to the left, the pulley (which is in the form of a disk) has a mass of 7.50 kg and a radius of 35 cm. What is the speed of the iron block
A heavy sled is being pulled by two people. The coefficient of static friction between the sled and the ground is %u03BCs = 0.579, find the minimum rope tension required to get the sled moving
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