Conceptual Physical Science (6th Edition)
6th Edition
ISBN: 9780134060491
Author: Paul G. Hewitt, John A. Suchocki, Leslie A. Hewitt
Publisher: PEARSON
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Chapter 11, Problem 69E
To determine
Why moon appears dark red rather than complete dark during lunar eclipse.
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A possible means for making an airplane invisible to radar is to coat the plane with an
anti-reflective polymer. If radar waves have a wavelength of 3.30 cm and the index
of refraction of the polymer is n = 1.20, how thick would you make the coating?
State your answer in cm to the nearest 0.001cm.
You may have noticed that the eyes of cats appear to glow green in low light. This effect is due to the reflection of light by the tapetum lucidum, a highly reflective membrane just behind the retina of the eye. Light that has passed through the retina without hitting photoreceptors is reflected back to the retina, thus enabling the animal to see much better than humans in low light.
Suppose the eye of a cat is 1.34 cm in diameter. Assume that the light enters the eye traveling parallel to the principal axis of the lens.
If some of the light reflected off the tapetum lucidum escapes being absorbed by the retina, what is the horizontal distance ?from the retina to the point where the light will be focused? Neglect any effects due to the liquid in the eye.
x = ? cm
The refractive index of the liquid in the eye is about 1.4. How does this affect the location of the image relative to where it would be if the eye were filled with air?
1) A pulse of light takes 3.00 ns to travel through air from an emitter to a detector. When a piece of transparent material with a length of 35.0 cm is introduced into the light's path, the pulse takes 3.40 ns to travel that same distance. The piece of transparent material is held so that the pulse never changes direction. What is the speed of light in the transparent material? (in ns please)
2) A small red LED is placed on the principal axis 6.00 cm from a concave mirror that has a radius of curvature of 14.0 cm. The LED can be considered to be a point source. Find the image distance for the image of the LED that is created by the mirror. (in cm please. Image attached below)
I appreciate the help. I've attempeted the first question multiple times and always end up with the wrong answer so I don't know what equation to use.
Chapter 11 Solutions
Conceptual Physical Science (6th Edition)
Ch. 11 - What is the principal difference between a radio...Ch. 11 - How does the frequency of an electromagnetic wave...Ch. 11 - In what region of the electromagnetic spectrum is...Ch. 11 - Prob. 4RCQCh. 11 - What is the fate of the energy in infrared light...Ch. 11 - How does the average speed of light in glass...Ch. 11 - Prob. 7RCQCh. 11 - Prob. 8RCQCh. 11 - Relative to the distance of an object in front of...Ch. 11 - Prob. 10RCQ
Ch. 11 - Prob. 11RCQCh. 11 - What is the angle between a light ray and its wave...Ch. 11 - What is the relationship between refraction and...Ch. 11 - Prob. 14RCQCh. 11 - Prob. 15RCQCh. 11 - Which has the higher frequency: red light or blue...Ch. 11 - What is the color of the peak frequency of solar...Ch. 11 - Prob. 18RCQCh. 11 - Prob. 19RCQCh. 11 - Prob. 20RCQCh. 11 - Why does the Sun look reddish at sunrise and...Ch. 11 - Prob. 22RCQCh. 11 - Prob. 23RCQCh. 11 - Which travels more slowly in glass: red light or...Ch. 11 - Prob. 25RCQCh. 11 - Prob. 26RCQCh. 11 - Is polarization a property of transverse waves,...Ch. 11 - How does the direction of polarization of light...Ch. 11 - Prob. 29RCQCh. 11 - How much unpolarized light does an ideal Polaroid...Ch. 11 - Electrons on a radio broadcasting tower are forced...Ch. 11 - Consider a pulse of laser light that is aimed at...Ch. 11 - The nearest star beyond the Sun is Alpha Centauri,...Ch. 11 - Blue-green light has a frequency of about 6 x 1014...Ch. 11 - A spider hangs by a strand of silk at eye level 30...Ch. 11 - When you walk toward a mirror, you see your image...Ch. 11 - When light strikes glass perpendicularly, about 4%...Ch. 11 - She looks at her face in the hand-held mirror....Ch. 11 - Wheels of a toy cart are rolled from a concrete...Ch. 11 - Prob. 47TARCh. 11 - Prob. 48TARCh. 11 - What is the fundamental source of electromagnetic...Ch. 11 - What is it, exactly, that waves in a light waver?Ch. 11 - Which have the longest wavelength: light waves,...Ch. 11 - Are the wavelengths of radio and television...Ch. 11 - Prob. 53ECh. 11 - Prob. 54ECh. 11 - What do radio waves and light have in common? What...Ch. 11 - Prob. 56ECh. 11 - Is glass transparent or opaque to light of...Ch. 11 - Short wavelengths of visible light interact more...Ch. 11 - What determines whether a material is transparent...Ch. 11 - The persons eye at point P looks into the mirror....Ch. 11 - Trucks often have signs on the back that say, If...Ch. 11 - What must be the minimum length of a vertical...Ch. 11 - What effect does your distance from the plane...Ch. 11 - From a steamy mirror, wipe away just enough...Ch. 11 - Prob. 65ECh. 11 - A friend says that a change in speed is necessary...Ch. 11 - Prob. 67ECh. 11 - Prob. 68ECh. 11 - Prob. 69ECh. 11 - A pair of toy cart wheels are rolled obliquely...Ch. 11 - Prob. 71ECh. 11 - Prob. 72ECh. 11 - How could you use the spotlights at a play to...Ch. 11 - What single color of light illuminating a ripe...Ch. 11 - Prob. 75ECh. 11 - Three lamps illuminate Patty OPlasma at the...Ch. 11 - What colors of ink do color ink-jet printers use...Ch. 11 - Very big particles, such as droplets of water,...Ch. 11 - Prob. 79ECh. 11 - Prob. 80ECh. 11 - Why does the Moon appear yellowish when it is low...Ch. 11 - Prob. 82ECh. 11 - Prob. 83ECh. 11 - When you stand with your back to the Sun, you see...Ch. 11 - A friend says that the secondary bow of a rainbow,...Ch. 11 - What percentage of light is transmitted by two...Ch. 11 - How can a single Polaroid filter be used to show...Ch. 11 - Light will not pass through a pair of Polaroid...Ch. 11 - In a physics study group, a friend declares in an...Ch. 11 - Prob. 90DQCh. 11 - Prob. 91DQCh. 11 - Light from a camera flash weakens with distance in...Ch. 11 - Prob. 93DQCh. 11 - Hold a pocket mirror almost at arms length from...Ch. 11 - Peter Hopkinson stands astride a large mirror and...Ch. 11 - Prob. 96DQCh. 11 - Red and green light of the same brightness combine...Ch. 11 - Below is a photo of science author Suzanne Lyons...Ch. 11 - Prob. 99DQCh. 11 - Prob. 100DQCh. 11 - When Stephanie Hewitt dips a glass rod into...Ch. 11 - Prob. 102DQCh. 11 - If you point the pinhole camera or the previous...Ch. 11 - Sunlight passing through a pinhole in a piece of...Ch. 11 - Choose the BEST answer to the question or the BEST...Ch. 11 - The source of electromagnetic waves is vibrating...Ch. 11 - Prob. 3RATCh. 11 - Whether a particular surface acts as a polished...Ch. 11 - Prob. 5RATCh. 11 - Refracted light that bends away from the normal is...Ch. 11 - The colors on the cover of your physics text are...Ch. 11 - The redness of a sunrise or sunset is due mostly...Ch. 11 - Prob. 9RATCh. 11 - Polarization occurs for waves that are (a)...
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- At what angle is light inside crown glass completely polarized when reflected from water, as in a fish tank?arrow_forwardA certain grade of crude oil has an index of refraction of 1.25. A ship accidentally spills 1.00 m3 of this oil into the ocean, and the oil spreads into a thin, uniform slick. 11 the Him produces a first-order maximum of light of wavelength 500 mm normally incident on it, how much surface area of the ocean does the oil slick cover? Assume the index of refraction of the ocean water is 1.34.arrow_forwardA goldfish is swimming inside a spherical bowl of water having an index of refraction n = 1.333. Suppose the goldfish is p = 10.0 cm from the wall of a howl of radius |R| = 15.0 cm. as in Figure P23.22. Neglecting the refraction of light caused by the wall of the bowl, determine the apparent distance of the goldfish from the wall according to an observer outside the bowl. Figure P23.22arrow_forward
- Two polarizing sheets P1 and P2 are placed together with their transmission axes oriented at an angle to each other. What is when only 25% of the maximum transmitted light intensity passes through them?arrow_forwardA water break at the entrance to a harbor consists of a rock barrier with a 50.0-m-wide opening. Ocean waves of 20.0-m wavelength approach the opening straight on. At what angles to the incident direction are the boats inside the harbor most protected against wave action?arrow_forwardCan a sound wave in air be polarized? Explain.arrow_forward
- Unreasonable Results To save money on making military aircraft invisible to radar, an inventor decides to coat them with a non-reflective material having an index of refraction of 1.20, which is between that of air and the surface of the plane. This, he reasons, should be much cheaper than designing Stealth bombers. (a) What thickness should the coating be to inhibit the reflection of 4.00-cm wavelength radar? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?arrow_forwardTo save money on making military aircraft invisible to radar, an inventor decides to coat them with a nonreflective material having an index of refraction of 1.20, which is between that of air and the surface of the plane. This, he reasons, should be much cheaper than designing Stealth bombers. (a) What thickness should the coating be to inhibit the reflection of 4.00-cm wavelength radar? (b) What is unreasonable about this result? (c) Which assumptions are unreasonable or inconsistent?arrow_forwardLight 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_forward
- On a day with fresh snow, you might notice that shadows—where the direct light from the sun is blocked—have a distinctly bluishcast. Explain why you might expect this.arrow_forwardA possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 2.68 cm and the index of refraction of the polymer is n = 1.72, how thick would you make the coating? (Assume that the index of refraction of the plane is higher than that of the coating. Also assume that the radar waves are normal to the surface of the coating. Give the minimum thickness that would make the airplane invisible to radar.)answer in cmarrow_forwardA possible means for making an airplane invisible to radar is to coat the plane with an antireflective polymer. If radar waves have a wavelength of 3.00 cm and the index of refraction of the polymer is n = 1.50, how thick would you make the coating?arrow_forward
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