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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?
A singly charged particle accelerated through a potential difference of 115V has a wavelength of 4.4fm. Find it's mass. An electron is accelerated through a potential differen
An opera singer in a convertible sings a note at 600 whereas cruising down the highway at 81. What is the frequency heard by a person standing beside the road in front of ca
A 100-kg astronaut (mass includes space gear) on a space walk is 5.0 m from a 3000-kg space capsule and at the full length of her safety cord. Where do the astronaut and the
An unstrained horizontal spring has a length of 0.34 m and a spring constant of 200 N/m. Two small charged objects are attached to this spring, one at each end, determine th
A boy of mass 35 kg and a girl of mass 40 kg are skating towards each other with speeds of 2.5 m/s, and 2.0 m/s respectively. Assume that there is no friction, and find their
Two overlapping beams of light of different wavelength ?a = 840 nm and ?b = 460 nm co-propagate through air, What is the angle between the beams travelling through the materia
An electric ceiling fan is rotating about a fixed axis with an initial angular velocity magnitude of 0.210 rev/s . The magnitude of the angular acceleration is 0.881rev/s .
What initial velocity (magnitude and direction) does the ball have relative to a person standing on the ground if the hot-airballoon is rising at 6.0 m/s relative to the gro
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