Be sure your calculator is in degree mode. A light ray goes from a crystal to water (Index of Refraction = 1.33). The angle of incidence is 2 degrees. The angle of refraction is 5 degrees. What is the index of refraction for the crystal?
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Animals respond in various ways to stimuli detected through their senses. some of these responses are stimulated by the presence of danger. which of these animal responses is the best example of a response to an immediate threat? a) a rooster crows every morning at the first sign of light. b) as something approaches an octopus, it shoots a cloud of ink. c) from late fall until spring, bears hibernate to preserve energy. reactivate d) a dog is getting hot in the sunlight, so he moves to a shaded area.

Name three different units of energy used to measure heat and describe what type of situations each is usually used.

Does anyone know how to solve this problem? i really need . i made an attempt but i just cant get it. a metal rod is 25.000 cm long at 25.0 degrees celsius. when heated to 102.0 degrees celsius, it is 25.054 cm long. what is the coefficient of linear expansion for this metal.