A ray of light strikes the side of a triangular prism, refract through it and emerges on the other side of the triangle. By the help of a ray diagram and knowledge of geometry determine the refractive index of prism in terms of the refracting angle of the triangle elevation and angle of refraction

current flows in a wire

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.