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(a) Give step-by-step directions of how the rod, without actually touching either sphere, can be used to give one of the spheres a negative charge.
(b) Give step-by-step directions of how the rod, without actually touching either sphere, can be used to give one of the spheres a positive charge.
A figure skater begins spinning counterclockwise at an angularspeed of 4.7 π rad/s. during a 4.9 s interval, she slowly pulsher arms inward and finally spins at 8.2 π rad/s. what is heraverage angular acceleration during this time interval?
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. In this device, an arm 8.84m long rotates about one end in a horizontal plane, and the..
The mass of the motorcycle and driver is 348 kg. Find out the magnitude of the normal force that acts on the cycle.
a 1000 mw power plant is operated for a year. it has a thermal efficiency of 32 and a utilization factor of 0.8. assume
A stone is dropped from rest from the roof of a 100-m high building; 2.00 s after that, a second stone is thrown straight down with initial speed v0, and the second stone passes the first stone 21.6 m above ground. What are the speeds of the two s..
an isolated conductor of arbitrary shape has a net charge of 15 x 10- 6 c. inside the conductor is a cavity within
a particle is projected vertically upwards with a velocity of v0 in a constant gravitational field. the medium offers a
A 0.075-kg arrow is fiered horizontally. The bowstring exertsan arerage force of 65 N on the arrow over a distance of 0.90m. With what speed does the arrow leave the bow
A horizontal ray of light falls on a vertical plane mirror free to turn about the horizontal axis. If the mirror turns through 20o, by what angle does the reflected ray turn.
A bedroom bureau with a mass of 57 kg, including drawers and clothing, rests on the horizontal floor. What is the static friction force on the bureau initially
A series RLC circuit has R = 500 ?, L = 35.1 mH, and C = 88.3 pF. What is the impedance of the circuit at resonance
two objects are identical and small enough that their sizes can be ignored relative to the distance between them which
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