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A spaceship moves at a speed of 0.95 c away from the Earth. It shoots a star wars torpedo toward the Earth at a speed of 0.90 c relative to the ship. What is the velocity of the torpedo relative to the Earth?
(The direction in which the spaceship moves is the positive direction)
You stand on the shore of a small river that measure 10 meters across. You take your cat and throw it into the middle of the stream. How long did it take the cat to reach you
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A spherical cavity of radius 4.00 is at the center of a metalsphere of radius 18.5 . A point charge 6.00 rests at the very center of the cavity, whereas the metal conductor carries no netcharg Determine the electric field at a point 2.00 from the ..
A mad scientist is designing a trap for intruders that will liftthem up into the air and hold them helpless. The device consists ofan equilateral triangle, 10.0 meters to a side, embedded in his floor.
in a series r-l circuit r0.125 ohms l500 microhenrys and the batterys emf is 0.750 v.a what is the energy stored in the
a heat engine operating between a hot reservoir at 500c and a cold reservoir at 0c is 65 as efficient as a carnot
A beam of light traveling in air strikes a very smooth water surface in a glass bowl at an angle of incidence of 35 degrees. Prove that the emergent beam is parallel to the incident beam
a potentiometer circuit for comparison of two resistances. the balance point with a standard resistor r 10.0nbspomega
A 12.0-{rm kg} box resting on a horizontal, frictionless surface is attached to a 5.00-{rm kg} weight by a thin, light wire that passes over a frictionless pulley). The pulley has the shape of a uniform solid disk of mass 2.40 {rm kg} and diameter 0...
A 50 Ω resistor is connected in series with a 15 μFcapacitor and a 60 Hz, 120 V source. What value inductor must be inserted in the circuit inorder to reduce the current to one-half that found in a
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