Question

For an independent study project, you design an experiment to measure the speed of light. You propose to bounce laser light off a mirror that is 51.0 km due east and have it detected by a light sensor that is 115 m due south of the laser. The first problem is to orient the mirror so that the laser light reflects off the mirror and into the light sensor. (a) Determine the angle that the normal to the mirror should make with respect to due west. 0.011 Incorrect: Your answer is incorrect. Have you drawn a figure showing all angles and distances? How is the angle of incidence and reflection related to the angle between the incident and reflected beam? How is the angle between the incident and reflected beam related to the distance between the laser and the mirror, and between the laser and the light sensor?° (b) Since you can read your protractor only so accurately, the mirror is slightly misaligned and the actual angle between the normal to the mirror and due west exceeds the desired amount by 0.003°. Determine how far south you need to move the light sensor in order to detect the reflected laser light. m

Answer 1

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