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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 27.9° and the angle of refraction is 39.0°.
(a) What is the index of refraction of the substance?
________
(b) What is the speed of light in the substance?
_______m/s
(c) At what minimum angle of incidence would the light be totally internally reflected?
_______°
A uniform solid sphere of mass 1.5 kg and diameter 30.0 cm starts from rest and rolls without slipping down a 35° incline that is 7.0 m long. Determine the angular speed of the sphere about its center at the bottom of the incline
A skier starts from rest at the top of a frictionless incline of height 20.0 m, How far does the skier travel on the horizontal surface before coming to rest
A flat coil of wire has an area A, N turns, and a resistance R. It is situated in a magnetic field, such that the normal to the coil is parallel to the magnetic field. The coil is then rotated through an angle of 90?, so that the normal becomes pe..
A 2.00-ton automobile is parked at the top of a hill that is 100ft high and inclined 25 degrees with respect to the horizon. find the automobile velocity (ft/s) at the bottom of the hill
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 1.5-cm tall object is placed 0.50 m to the left of a diverging lens with a focal length of 0.20 m. What is the location of the final image with respect to the object
An electron is in the ground state of an infinite square well. The energy of the ground state is E1 = 1.26 eV. What is the width of the square well
In a circus performance a monkey is strapped to a sled and both are given an initial speed of 4.0 m/s up a 20 degree inclined track. How far up the incline do the monkey and sled move
The masses of the Pluto and Charon are 1.31×10^22 kg and 1.52×10^21 kg, respectively, Where is the center mass of this system located
0.75mol of argon gas is admitted to an evacuated 70cm3 container at 40 degrees C. estimate the final pressure of the gas
Two identical conducting spheres, fixed in place, attract each other with a force of 0.094 N when their center to center separation is 60.00 cm. What was the initial negative charge on one of the spheres
One end of a long rod (n=1.5) is formed into a convex surface with a radius of curvature of 6cm. Find the image and object focal lengths, f' and f, and mark the locations of the foci in your to-scale sketch
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