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A straight wire, 0.5 m long, is moved straight up at a speed of 20 m/s during a 0.4-T magnetic field pointed in the horizontal direction.
1. What EMF is induced in the wire?
2. The wire is part of a circuit of total resistance of 6.0 \Omega. What is the current in the circuit?
A taut rope has a mass of 0.170 kg and a length of 3.55 m. What power must be supplied to the rope to generate sinusoidal waves having an amplitude of 0.110 m and a wavelength of 0.490 m, traveling with a speed of 31.0 m/s?
As part of a safety investigation, two 1800 cars travelling at 18 are crashed into different barriers. Find an average forces exerted on (a) car that hits a line of water barrels and takes 1.80 to stop, and (b) car that hits a concrete barrier and ta..
An unstable particle at rest breaks up into two fragments of unequal mass. The mass of the lighter fragment is equal to 2.00 10-28 kg, what is the speed of the heavier fragment
The secondary colors, cyan, magenta, and yellow, can each be obtained by subtracting a color from white light. Which primary color is subtracted in each case
What horizontal force applied at its highest point is necessary to keep a wheel of mass from rolling down a slope inclined at angle to the horizontal
A small mailbag is released from a helicopter that is descending steadily at 2.71 m/s. How far is it below the helicopter
Suppose you are using total internal reflection to make an efficient corner reflector, what must be the minimum index of refraction of the material
question a circuit consists of a resistor in series with an inductor and an ac generator that supplies a voltage of 115
At its Ames Research Center, NASA uses its large "20-G" centrifuge to test the effects of very large accelerations ("hypergravity") on test pilots and astronauts. How fast must the astronaut's head be moving to experience this maximum acceleration
A He-Ne laser produces light of wavelength 633 nm with intensity 1.09 103 W/m2, over a beam of cross-sectional area 1.04 mm2. How many photons per second are emitted by the laser
Starting from the top left corner and moving clockwise the charges are -10 uC, -10 uC, 5 uC, and 5 uC. What is the electric force on the top left charge due to all the other charges
An electric motor rotating a workshop grinding wheel at a rate of 118 rev/min is switched off. Suppose the wheel has a constant negative angular acceleration of magnitude 2.50 rad/s2.
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