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A particle of charge Q = +2 C has an instantaneous velocity v = (4i - 3j) meter per second and is moving through a magnetic field B = (4k) T. Find the magnitude of the instantaneous magnetic force on particle.
A ball is thrown horizontally from a height of 16.2 m and hits the ground with a speed that is three times its initial speed. What was the initial speed?
A man drags a 75.0-kg crate across the floor at a constant velocity by pulling on a strap attached to the bottom of the crate. Find the magnitude of the tension in the strap
q1. the flywheel of an engine has a moment of inertia 2.20 rm kg cdot rm m2 about its rotation axis. what is its final
A 5.00 m long uniform ladder leans against a smooth wall and its base rests on a rough floor. The ladder has a mass of 18.0 kg and its base is a distance of 2.30 m from the wall. A person of mass 80.0 kg climbs 2.50 m up the ladder. If the ladder ..
after flying for 15 min in a wind blowing 42 kmh at an angle of 28deg south of east an airplane pilot is over a town
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 ball is thrown straight upward with a velocity of 39m/s. How much time passes before the ball strikes the ground
At 20 C, a steel rod of length 40.000 cm and a brass rod oflength 30.000 cm, both of the same diameter, are placed end to endbetween two rigid supports 70.000 cm apart, How far from its old positioin is the new junction
In an insulated container, 300g of ice at aninitial temperature of -5degrees C is added to 550g of water at aninitial temperature of 20degrees C. estimate the amount of ice remaining
An internal explosion breaks an object, initially at rest, into two pieces, one of which has 1.42 times the mass of the other. If 7540 Joule were released in the explosion, find how much kinetic energy did the heavier piece acquire
A student sees a newspaper ad for an apartment that has 1430 square feet (ft2) of floor space. How many square meters of area are there
A light bulb emits light uniformly in all directions. The averageemitted power is 150.0 W. At a distance of 7 m from the bulb,determine (a) the average intensity of the light,(b) the rms value of the electric field, and(c) the peak value of the elect..
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