Conceptual Physics: The High School Physics Program
9th Edition
ISBN: 9780133647495
Author: Paul G. Hewitt
Publisher: Prentice Hall
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Chapter 27, Problem 62A
To determine
To determine the height above the ground is an opening that casts a spot of 15cm in diameter.
Expert Solution & Answer
Explanation of Solution
Introduction:
The circular spots observed just before and after the eclipse. Because the tiny gaps between leaves act as pinhole lenses projecting crescent shaped images of the eclipsed sun on to the earth.
Generally, the circular spots appear before and after the eclipse and they are cast with tree leaves and they act like a camera. As given, that to cast a 10 cm diameter spot on the ground the opening is 100 times higher and at the height of 10 m above the ground. Similarly, to cast the 15 cm spot with the opening of 100 times higher the spot would be cast with 15 m above the ground.
Conclusion:
The 15 cm spot cast by opening at 15 m above the ground.
Chapter 27 Solutions
Conceptual Physics: The High School Physics Program
Ch. 27 - Prob. 1ACh. 27 - How long does it take for light to travel across...Ch. 27 - How did a spinning octagonal mirror help Michelson...Ch. 27 - How long does light take to travel from the sun to...Ch. 27 - How long does light take to travel a distance of...Ch. 27 - What is the source of electromagnetic waves?Ch. 27 - Prob. 7ACh. 27 - How do the frequencies of infrared and ultraviolet...Ch. 27 - How does the role of inertia relate to the rate at...Ch. 27 - Different bells and tuning forks have their own...
Ch. 27 - Prob. 11ACh. 27 - Will glass be transparent to light with...Ch. 27 - Does the time delay between the absorption and...Ch. 27 - When light encounters a material, it can build up...Ch. 27 - Prob. 15ACh. 27 - What happens to the energy of light when it...Ch. 27 - Prob. 17ACh. 27 - Distinguish between an umbra and a penumbra.Ch. 27 - a. Distinguish between a solar eclipse and a lunar...Ch. 27 - What is the difference between light that is...Ch. 27 - Why is light from a common lamp or from a candle...Ch. 27 - In what direction is the polarization of the glare...Ch. 27 - How do polarizing filters allow each eye to see...Ch. 27 - When you look at a distant galaxy through a...Ch. 27 - Prob. 25ACh. 27 - Prob. 26ACh. 27 - Prob. 27ACh. 27 - Prob. 28ACh. 27 - Prob. 29ACh. 27 - Your friend says that any radio wave travels...Ch. 27 - Are the wavelengths of radio and television...Ch. 27 - Prob. 32ACh. 27 - Prob. 33ACh. 27 - If the mirror in Michelsons apparatus had had six...Ch. 27 - If a one-side-silvered plane mirror were used in...Ch. 27 - Prob. 36ACh. 27 - Short wavelengths of visible light interact more...Ch. 27 - Imagine that a person can walk only at a certain...Ch. 27 - If you fire a ball through a pile of sand, it will...Ch. 27 - Short wavelengths of visible light interact more...Ch. 27 - Suppose that sunlight is incident upon both a pair...Ch. 27 - Prob. 42ACh. 27 - The intensity of light decreases as the inverse...Ch. 27 - Only some of the people on the daytime side of...Ch. 27 - Lunar eclipses are always eclipses of a full moon....Ch. 27 - Why do Polaroid sunglasses reduce glare, whereas...Ch. 27 - An ideal polarizing filter transmits 50% of the...Ch. 27 - What percentage of light would be transmitted by...Ch. 27 - Light with wavelength and frequency f in air...Ch. 27 - Prob. 50ACh. 27 - About 150 years ago Armand Fizeau used a toothed...Ch. 27 - Prob. 52ACh. 27 - Prob. 53ACh. 27 - Prob. 54ACh. 27 - The nearest star beyond the sun is Alpha Centauri,...Ch. 27 - The Hydra galaxy is moving away from Earth at...Ch. 27 - When listening to a radio station broadcasting at...Ch. 27 - Blue-green light has a frequency of about 61014Hz....Ch. 27 - Some laser pointers emit light waves with a...Ch. 27 - Prob. 60ACh. 27 - Atmospheric carbon dioxide strongly absorbs light...Ch. 27 - Prob. 62ACh. 27 - A satellite TV company broadcasts its signals from...Ch. 27 - Consider a pulse of laser light aimed at the moon...Ch. 27 - Stephen uses his cell phone to talk to Fiona, who...Ch. 27 - A light wave has wavelength . a. Write an equation...Ch. 27 - Linseys favorite radio station broadcasts at a...Ch. 27 - At some point in its solar orbit, Mars is a...Ch. 27 - Prob. 69A
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