Conceptual Physics (12th Edition)
12th Edition
ISBN: 9780321909107
Author: Paul G. Hewitt
Publisher: PEARSON
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Textbook Question
Chapter 1, Problem 29RCQ
If Earth were smaller than it is, but the Alexandria-to-Syene distance were the same, would the shadow of the vertical pillar in Alexandria be longer or shorter at noon during the summer solstice?
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If Earth were smaller than it is, but the Alexandria-to-Syene distance were the same, would the shadow of the vertical pillar in Alexandria be longer or shorter at noon during the summer solstice?
The shadow cast by a vertical pillar in Alexandria at noon during the summer solstice is found to be 1/8 the height of the pillar. The distance between Alexandria and Syene is 1/8 Earth’s radius. Is there a geometric connection between these two 1-to-8 ratios?
How did Aristotle apply the scientific method to lunar eclipses?
Chapter 1 Solutions
Conceptual Physics (12th Edition)
Ch. 1 - Prob. 1RCQCh. 1 - Prob. 2RCQCh. 1 - When the Sun was directly overhead in Syene, why...Ch. 1 - Earth, like everything else illuminated by the...Ch. 1 - How does the Moon's diameter compare with the...Ch. 1 - Prob. 6RCQCh. 1 - Why did Aristarchus choose the time of a half Moon...Ch. 1 - What are the circular spots of light seen on the...Ch. 1 - What is the role of equations in this book?Ch. 1 - Outline some steps of the scientific method.
Ch. 1 - Distinguish among a scientific fact, a hypothesis,...Ch. 1 - In daily life, people are often praised for...Ch. 1 - What is the test for whether a hypothesis is...Ch. 1 - Prob. 14RCQCh. 1 - What test can you perform to increase the chance...Ch. 1 - Why are students of the arts encouraged to learn...Ch. 1 - Must people choose between science and religion?Ch. 1 - Psychological comfort is a benefit of having solid...Ch. 1 - Clearly distinguish between science and...Ch. 1 - Why is physics considered to be the basic science?Ch. 1 - Poke a hole in a piece of cardboard and hold the...Ch. 1 - Choose a particular day in the very near...Ch. 1 - What is the penalty for scientific fraud in the...Ch. 1 - Which of the following are scientific hypotheses?...Ch. 1 - Prob. 25RCQCh. 1 - Prob. 26RCQCh. 1 - What is probably being misunderstood by a person...Ch. 1 - The shadow cast by a vertical pillar in Alexandria...Ch. 1 - If Earth were smaller than it is, but the...Ch. 1 - The great philosopher and mathematician Bertrand...Ch. 1 - Bertrand Russell wrote, u I think we must retain...Ch. 1 - Your favorite young relative is wondering whether...
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- Suppose Eratosthenes had found that, in Alexandria, at noon on the first day of summer, the line to the Sun makes an angle 30° with the vertical. What, then, would he have found for Earth’s circumference?arrow_forwardWhat are two ways in which Aristotle deduced that Earth is spherical?arrow_forwardSuppose Eratosthenes’ results for Earth’s circumference were quite accurate. If the diameter of Earth is 12,740 km, what is the length of his stadium in kilometers?arrow_forward
- On what did Plato base his knowledge? Was it opinions, policies, marketing, public relations, myths, evidence, hypotheses, beliefs, laws, principles, theories? On what do modern astronomers base their knowledge?arrow_forwardWhy did Pythagoras believe that Earth should be spherical?arrow_forwardIn 3-5 sentences, describe how Copernicus developed his model of the solar system. In your answer, include an explanation for why his model was, or was not, readily accepted at the time.arrow_forward
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