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Two charges, one twice as large as the other, are located 15 apart and experience a repulsive force of 95.
What is the magnitude of the larger charge?
A hotel elevator ascends 110 {rm m} with a maximum speed of 4 {rm m/s}. Its acceleration and deceleration both have a magnitude of 1.20 {rm m/s^2}.
A pair of eyeglasses has an index of refraction nglass = 1.52. It is covered with an antireflection layer that has a thickness of 120 nm, what is its index of refraction
Two current-carrying wires are exactly parallel to one another and both carry 3.5 A of current. What is the direction of the magnetic force caused by wire 2 on wire 1
A rescue helicopter lifts a 60 kg person straight up by means of a cable. The person has an upward acceleration of 0.70 m/s2, How much work is done by the person's weight
A ball dropped from a height of 4.00 m makes an elastic collision with the ground. Assuming no mechanical energy is lost due to air resistance, a) show that the ensuing motion is periodic, b) find the period of the motion.
since all economies are faced with scarcity how might nations attempt to minimize the human hardship associated with
Some athletes can put out as much as 800 watts in short bursts. If you could sustain such energy output long enough to reach the top of a mountain, how much time would it take you to get there from the valley, 3000 meters below the peak? So how does ..
A student walks 24 m from her math class and then turns 90° and walks 10 m to her locker, that is directly north of her class. What is her total displacement.
A 120 kg barrel which is initially at rest is rolled down an inclined plane. The friction between the barrel and the surface of the plane is negligible, calculate the barrel's velocity when it reaches the ground level
Visible light of wavelength 480 nm is incident on a diffraction grating with a slit spacing of 0.003 mm
A radio with a resistance of 40 ohms and a clock with a resistance of 20 ohms are connected in series on a 120V, What is each power supplied to the circuit in the parallel case, How much power is dissipated by each componant
A hollow spherical shell has mass 7.95kg and radius 0.225m, What is the kinetic energy of the shell after it has turned through 6.75rev
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