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Light moves more slowly through a material medium than through a vacuum, its phase velocity v being c/n, where n is the index of refraction of the medium.
If now the medium itself moves at a velocity V << c with respect to the laboratory, show that the phase velocity of the light with respect to the laboratory is approx. c/n + V(1- 1/n^2)
The dimensions of a parallel-plate capacitor are all increased by afactor of five. By what factor doesthe capacitance change? (The dimensions refer to the length and width of a plate and the spacing between the plates.)
A person is pushing a wheelbarrow along a ramp that makes an angle ? = 25.0° with the horizontal. The wheelbarrow and load have a combined mass of 20.20 kg with the center of mass at the midpoint of the length L. What is the total force the person mu..
Estimate how long it will take for the bleach molecules to diffuse through the extent of the room, assuming that the bleach bottle is in the center of the room, and the room is perfectly square, and is a 10 foot x 10 foot room.
a simple harmonic oscillator consists of a block of mass 3.90 kg attached to a spring of spring constant 169 nm. when t
400 L of water is at 4 oC. If it took a heat 600 seconds to heat this up to 6 oC, what is the power rating of the heater
If the range of the projectile is 2.39 m, the time-of-flight is T = 0.919 s, and air resistance is turned off, determine the following. What is the launch angle of the projectile
A stone is dropped from a cliff; 2.47 s later another stone is thrown downward with an initial speed of 35 m/s. Find the height of the cliff
A 1500 lb car traveling 80 mph due west is struck by lightening and charged with an enormous negative charge. If the Earth's magnetic field (.3 gauss) just exactly picks up the car while it is still moving, how much charge is there on the car?
A boy shoots a rock with initial velocity of 40 m/s straight up from his slingshot. He quickly reloads and shoots another rock in the same way 4.0 s later.
The planet Uranus has a mass about 14 times theEarth's mass, and its radius is equal to about 3.7 Earthradii. find the minimum escape speed from Uranus
A 4.60 g charcoal sample from anancient fire pit has a 14C activity of 63.0disintegrations/min. How old is the charcoal sample
Two masses, m1 = 2.10 kg and m2 = 9.51 kg are on a horizontal frictionless surface and they are connected together with a rope. What is the acceleration of the whole system
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