Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 30, Problem 3Q
Explain the situation shown in ● Fig. 30.8. How can this be done without hurting one’s hand? (Hint: The fearless author’s hand extends inside the sliding glass-windowed door of a laboratory cabinet.)
Figure 30.8 See Question 3. (© Cengage Learning.)
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The speed of light in a vacuum is 3 x 108 m/s. What is the ratio of its speed in water (n = 1.33) to its speed in a vacuum? Enter your answer as a percentage
A. Stay the same. Glass is tightly against the cardboard. B. Increase. Light bends away from normal line entering glass. C. Increase . Light bends toward normal line entering glass. D. Decrease. Light bends away from normal line entering glass. E. Decrease. Light bends toward normal line entering .
Light travels a distance of 0.884 m in 2.00 ns in a given substance.
What is the index of refraction of this substance?
Express your answer to three significant figures.
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Physics Laboratory Experiments
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- You left a glass full of homogenized milk on a table undisturbed for half an hour. What would result if you shined a laser beam against the side of the glass? a. The beam of light will be reflected back to its original source. b. A path of light will be visible from one side of the glass. c. The beam of light will not be reflected nor will it be visible. d. No light will pass through the two side of the glass.arrow_forwardThe theory behind stars twinkling is that: A) The refractive index of the different layers of earth's atmosphere changes continuously, consequently the position of the star's image changes with time B) The intensity of light emitted by them changes with time C) The light from the star is scattered by the dust particles and air molecules in the earth's atmosphere D) The distance of the stars from the earth changes with timearrow_forwardThe speed of light in a vacuum is 3.00 ´ 108 m/s. If the speed of light passing through silicon is 7.5 ´ 107 m/s, what is the refractive index of silicon? Question 1 options: a) 25 b) 2.5 c) 4 d) 40arrow_forward
- The speed of light in a vacuum is 3.00 x 108 m/s. Determine the speed of light through the following materials. air (n=1.00) ethanol (n=1.36) crown glass (n=1.52) zircon (n=1.91) diamond (n=2.42)arrow_forwardTrucks often have signs on their back ends that say, “If you can’t see my mirrors, I can’t see you.” Explain the physics here.arrow_forwardWhen moonlight strikes the surface of a calm lake, whathappens to this light?(a) All of it reflects from the water surface back to the air.(b) Some of it reflects back to the air; some enters the water.(c) All of it enters the water.(d) All of it disappears via absorption by water moleculesarrow_forward
- Repeat Problem 34, but this time assume the quartz, polystyrene, and sodium chloride are surrounded by water.arrow_forwardWithout trying it, how would you know that a diamond will scratch glass?arrow_forwardThe index of refraction for water is about 43. What happens as a beam of light travels from air into water? (a) Its speed increases to 43c, and its frequency decreases. (b) Its speed decreases to 34c, and its wavelength decreases by a factor of 34. (c) Its speed decreases to 34c, and its wavelength increases by a factor of 43. (d) Its speed and frequency remain the same. (e) Its speed decreases to 34c, and its frequency increases.arrow_forward
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