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The refractive index of a transparent material can be determined by measuring the critical angle when the solid is in air. If ?c= 42.0° what is the index of refraction of the material? A light ray strikes this material (from air) at an angle of 33.3° with respect to the normal of the surface. Calculate the angle of the reflected ray (in degrees). Calculate the angle of the refracted ray (in degrees). Assume now that the light ray exits the material. It strikes the material-air boundary at an angle of 33.3° with respect to the normal. What is the angle of the refracted ray?
An observer, whose eyes are 1.92m above the ground, is standing 31 m away from a tree. The ground is level and the tree is growing perpendicular to it. The observer's line of sight with the treetop makes an angle of 21° above the horizontal. How t..
Coherent light with wavelength 601 passes through two very narrow slits, and interference pattern is observed on a screen a distance of 3.00 from the slits.
A horizontal 790-N merry-go-round of radius 1.60 m is started from rest by a constant horizontal force of 55 N applied tangentially to the merry-go-round
How much work is done by the Moon's gravitational field as a 900 kg meteor comes in from outer space and impacts on the Moon's surface
Logan is given an initial speed of 4.00 m/s down a 20 %u030A incline. when he reaches the bottom of the incline
Starting from rest, a 96-kg firefighter slides down a fire pole. The average frictional force everted on him by the pole has a magnitude of 790 N, How far did he slide down the pole
Write an expression for the instantaneous voltage delivered by an AC generator supplying 120 V (rms) at 60 Hz
The coefficients of static and kinetic friction between a 67 kg box and a horizontal surface are 0.56 and 0.32, respectively. Illustrate what is the acceleration of the object if a 335 N horizontal force is applied to the box?
A typical helium-neon laser found in supermarket checkout scanners emits 633nm--wavelength light in a 1.1mm diameter beam with a power of 1.0mW. What is the amplitude of the oscillating magnetic field in the laser beam
Nik is walking a tightrope across Niagara Falls. The tightrope spans 460m. Find the tension in the tightrope while he is standing at this point
Water at 20.0 °C is sprayed onto 0.236 kg of molten gold at 1063 °C (its melting point). What is the minimum mass of water that must be used
The two liquids do not mix. What is the difference in height between the top surface of glycerine and top surface of the alcohol.
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