Question

Problem 175.00 points) A beam of light traveling in air strikes a slab of transparent material. The incident beam makes an angle of 40' with the normal, and the refracted beam make an angle of 12.4' with the normal. What is the speed of light in the transparent material? (c-3.0 x 108 m/s) 1.0 x 108 m/s 2.0 x 108 m/s C)2.5 x 108 m/s D) 3.0 x108 m/s Problem 18(5.00 points) In the illustration, two particles carry the same magnitude of charge, one is positive and the other is negative. Which of the dashed lines could be an equipotential line of the two charged particles? A) The circle around one charged particle, with every point on the circle equidistant from the center of the charged particle. B) The vertical line that is located halfway between the charges The horizontal line that runs directly through the center of each None of the three lines could be an equipotential line for bothcharges. Problem 19(5.o0 points) Rain drops can accumulate charges when they move in the air. We assume water can conduct electricity. As a result, for a spherical raindrop of radius r and charge Q, its electrie potential is equal kQ to Consider eight identical spherical raindrops are each at a potential Vo At some point, they coalesce to make one large spherical raindrop. Assume no mass and charge is lost when the raindrops coalesce, what is the electric potential of the final raindrop? (Note: How does the radius change when the drops become one drop?) (Hint: Volume of a sphere-4πr3) A) Vo/8 B) Vo/2 2% 4% E) 8Vo.

Answer 1