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A 720 nm light bean in air hits the flat surface of a certain plastic and the bean is split into a reflected ray and a refracted ray. If the refracted ray is completely polarized when it is at 39° with respect to the surface, what is the index of refraction of the plastic?
A skier moving at 4.50 m/s encounters a long, rough horizontal patch of snow having coefficient of kinetic friction 0.230 with her skis. How far does she travel on this patch before stopping.
A satellite orbits at a distance from the Earth's center of about 4.80 Earth radii and takes 14.8 hours to go around once, What is its orbital velocity
Express the power in terms of some or all of the variables given in the problem introduction.
A girl is sledding down a slope that is inclined at 30º with respect to the horizontal. The wind is aiding the motion by providing a steady force of 184 N that is parallel to the motion of the sled.
Zach, whose mass is 71kg , is in an elevator descending at 13m/s . The elevator takes 5.0s to brake to a stop at the first floor. What is Zach's apparent weight while the elevator is braking
A boy is standing on a frozen lake (i.e. no friction) holding a rope that is attached to his sled. He pulls on the rope and exerts a horizontal force of 5.2 N, What is the acceleration of the boy
An atom of mass 3.32*10^(-26)kg oscillates in one dimension at a frequency of 10^13Hz, calculate the quantized energy levels
Estimate the change in COP of your electric food freezer when it is removed from your kitchen to its new location in your basement, which is 8 C° cooler than your kitchen. (Assume that the temperature in the kitchen is 20°C and that the temperature o..
A solid aluminum cylinder with density equal to 2700 kg/m3 has the weight equal to 0.66 N in air and the apparent weight of 0.22 N when immersed in an unknown liquid. What is the density of this liquid
A sphere with radius 0.190 has density that decreases with distance from the center of the sphere according to p = 35,000 kg/m^3 - (9,250 kg/m^4)r
One end of a metal rod is in contact with a thermal reservoir at 691 K, and the other end is in contact with a thermal reservoir at 105 K. what is the change in entropy of the rod
Treating our rigid legged friend as a particle, what is the average force his feet exert on the ground as he slows down.
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