College Physics
College Physics
11th Edition
ISBN: 9781305952300
Author: Raymond A. Serway, Chris Vuille
Publisher: Cengage Learning
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2. (a) A ray of light in air is incident on an air-to-glass boundary at an angle of exactly 30° with the normal. If
the index of refraction of the glass is 1.65, what is the angle of the refracted ray within the glass with respect to
the normal?
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Transcribed Image Text:2. (a) A ray of light in air is incident on an air-to-glass boundary at an angle of exactly 30° with the normal. If the index of refraction of the glass is 1.65, what is the angle of the refracted ray within the glass with respect to the normal?
1. In an experiment to discover the effect of centripetal force on velocity, an object of mass m was swung on
the end of a string in a horizontal circular path of radius r.
F = mv²ir [Equation 1]
F = mv/r
The string tension provided the centripetal force Fthat produced the centripetal acceleration and kept the
object revolving in its circular path.
The centripetal force was determined by using a spring scale or force sensor that measured the tension on the
string.
By timing the revolutions and calculating the distance traveled by the object, the velocity v of the object was
determined.
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Transcribed Image Text:1. In an experiment to discover the effect of centripetal force on velocity, an object of mass m was swung on the end of a string in a horizontal circular path of radius r. F = mv²ir [Equation 1] F = mv/r The string tension provided the centripetal force Fthat produced the centripetal acceleration and kept the object revolving in its circular path. The centripetal force was determined by using a spring scale or force sensor that measured the tension on the string. By timing the revolutions and calculating the distance traveled by the object, the velocity v of the object was determined.
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