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A laser beam is traveling through an unknown substance. When it encounters a boundary with air, the angle of reflection is 27.6° and the angle of refraction is 46.0°.
(a) What is the index of refraction of the substance?
(b) What is the speed of light in the substance?
(c) At what minimum angle of incidence would the light be totally internally reflected?
A car with a mass of 2000kg is moving with a speed of 55 mph and enters a circular turn at level ground. What is the angular velocity of the car
A physicist is designing a cyclotron to accelerate protons toone tenth the speed of light. The magnet used will produce a fieldof 1.4 T. Calculate the radius of the cyclotron
What is the magnitude of the force of upper leg on the lower leg at the knee joint.
A 0.49 kg object connected to alight spring with a force constant of 24.8 N/m oscillates on a frictionless horizontalsurface. Determine the maximum speed of the object
A certain light truck can go around a flat curve having aradius of 150 m with a maximum speed of 34.5 m/s. With what maximum speed can it go arounda curve having a radius of 88.5m
a balloon contains 4.20 moles of a monatomic ideal gas. As energy is added to the system by heat, find work Wenv done by the gas in expanding the balloon
Using their ship’s engine, they pull on the asteroid with a force of 490 N. Initially the tug and the asteroid are at rest, 450 m apart. Explain how much time does it take for the ship and the asteroid to meet?
For a spherical celestial object of radius R, acceleration due to gravity g at a distance x from the center of the object is g = g0R2/x2, where g0 is the acceleration due to gravity at the object's surface and x > R.
Two people wish to push a big beer freezer weighing 2000 N up a ramp inclined at an angle of 37.0o with the horizontal. what average force does it exert on the heavy object
In hot-air ballooning, a large balloon is filled with air heated by a gas burner at the bottom. Why must the air be heated
question1a large flat block of mass 7m rests on a level smooth tabletop muk asymp 0. on top of it is a much smaller
question a mass of 0.30 on the end of a spring oscillates with a period of 0.45 and an amplitude of 0.15find the
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