Applied Physics (11th Edition)
11th Edition
ISBN: 9780134159386
Author: Dale Ewen, Neill Schurter, Erik Gundersen
Publisher: PEARSON
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Chapter 22, Problem 5RQ
(a)
To determine
Explain how the U.S. flag look like through a piece of red glass.
(b)
To determine
Explain how the U.S. flag look like through a piece of blue glass.
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A ray of light travelling in air enters obliquely into water. Does the light ray bends towards the normal or away from the normal? Why?
A ballet dancer is on stage dressed in a green body suit. How could you light the stage so that the dancer's costume looked black to the audience?
Light it green so that it absorbs the color of the dress.
Light it red because red cancels out the green
Light it any color except fro green, since a green dress reflects green.
Light it with black light, so that it makes it black.
Consider light passing from air into water.
What is the ratio of its wavelength in water, λw, to its wavelength in air, λa?
Chapter 22 Solutions
Applied Physics (11th Edition)
Ch. 22 - Prob. 1RQCh. 22 - What property of light determines its color?Ch. 22 - Name the light waves whose wavelengths are (a)...Ch. 22 - What is the apparent color of a green dress in a...Ch. 22 - Prob. 5RQCh. 22 - Prob. 6RQCh. 22 - What is a complementary color? Name the complement...Ch. 22 - How are the primary pigments related to the...Ch. 22 - Prob. 9RQCh. 22 - Prob. 10RQ
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- Light traveling in a medium of index of refraction n1 is incident on another medium having an index of refraction n2. Under which of the following conditions can total internal reflection occur at the interface of the two media? (a) The indices of refraction have the relation n2 n1. (b) The indices of refraction have the relation n1 n2. (c) Light travels slower in the second medium than in the first. (d) The angle of incidence is less than the critical angle. (e) The angle of incidence must equal the angle of refraction.arrow_forwardA 4.00-m-long pole stands vertically in a freshwater lake having a depth of 2.00 m. The Sun is 40.0° above the horizontal. Determine the length of the pole’s shadow on the bottom of the lake.arrow_forwardA 4.00-m-long pole stands vertically in a freshwater lake having a depth of 2.00 m. The Sun is 40.0 above the horizontal. Determine the length of the poles shadow on the bottom of the lake.arrow_forward
- The 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_forwardFor some reason, a banana turned magenta. In what light should you serve the banana such that it appears yellow?arrow_forwardEarth receives 1400 W/m² of solar power. If all the solar energy falling on a lens of area 0.2 m² is focussed onto a block of ice of mass 280 g, the time taken to melt the ice will be...minutes. (Latent heat of fusion of ice = 3.3 x 10^5 J/kg)arrow_forward
- To reduce glare from the surroundings, the windows of some department stores, rather than being vertical, slant inward at the bottom. How does this reduce glare?arrow_forwardNo glass is perfectly transparent. Mainly because of reflections, about 92% of light passes through an average sheet of clear windowpane. The 8% loss is not noticed through a single sheet, but through several sheets, the loss is apparent. How much light is transmitted by a double-paned window (one with two sheets of glass)?arrow_forwardA pulse of red light and a pulse of blue light enter a glass block at the same time normal to its surface. Strictly speaking, after passing through the block, which pulse exits first?arrow_forward
- Answer the following questions with a YES or NO. Explain your answer with a few sentences. |(a) During sunset, we can see the reflected image of the Sun on the water surface of a lake. Is the reflection at the water surface the result of total internal reflection? (b) We simultaneously heat two cups of water in a microwave oven. One cup is filled 10%. The other cup is filled 100%. Will the latter cup (filled 100%) be hotter?arrow_forwardThe speed of light in any transparent medium is the same as the speed of light in a vacuum. true or false?arrow_forwardA student is sitting outside on a sunny day looking at a book with a blue cover. She is explaining to her friend how she can see the book cover as blue. She said: "I can see the book cover as blue because light from the sun travels in straight lines to the book. The white light from the sun contains red, green, and blue light. When it strikes the book cover, the blue light is reflected at equal angles, while the rest of the colors are absorbed in the book cover. The reflected blue light then enters my eye, and I see the book cover as blue." Evaluate her explanation to determine whether it is good or poor, by choosing one of the following responses: O It is problematic because the idea that "the white light from the sun contains red, green, and blue," is not correct. It is problematic because the idea that "mostly the blue light energies are reflected at equal angles," is not correct. It is good because all the ideas are correct scientific ideas, and none of the important ideas are…arrow_forward
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