EP CONCEPTUAL PHYSICAL SCI.-MOD.MASTER.
6th Edition
ISBN: 9780134091983
Author: Hewitt
Publisher: PEARSON CO
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Chapter 11, Problem 91DQ
To determine
How are military people are able to see enemies in darkness also.
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Consider the situation in the figure below; a neutral conducting ball hangs from the ceiling by an insulating string, and a charged insulating rod is going to be placed nearby.
A. First, if the rod was not there, what statement best describes the charge distribution of the ball?
1) Since it is a conductor, all the charges are on the outside of the ball. 2) The ball is neutral, so it has no positive or negative charges anywhere. 3) The positive and negative charges are separated from each other, but we don't know what direction the ball is polarized. 4) The positive and negative charges are evenly distributed everywhere in the ball.
B. Now, when the rod is moved close to the ball, what happens to the charges on the ball?
1) There is a separation of charges in the ball; the side closer to the rod becomes positively charged, and the opposite side becomes negatively charged. 2) Negative charge is drawn from the ground (via the string), so the ball acquires a net negative charge. 3)…
answer question 5-9
AMPS
VOLTS
OHMS
5) 50 A
110 V
6) .08 A
39 V
7) 0.5 A
60
8) 2.5 A
110 V
Chapter 11 Solutions
EP CONCEPTUAL PHYSICAL SCI.-MOD.MASTER.
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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