Essential Cosmic Perspective
9th Edition
ISBN: 9780135795033
Author: Bennett
Publisher: PEARSON
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Chapter 3, Problem 4EAP
What do we mean by a model in science? Briefly summarize the Greek geocentric model.
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Match each discovery, model, or Law with the person we credit with discovering them
(Select T-Tycho Brahe, K-Kepler, G-Galileo, A-Aristotle, P-Ptolemy, N-Newton If the first is T and the rest K, enter
TKKKKK)
A) Devised the earliest geocentric solar system models
B) The orbits of planets are
C) Made careful measurements of the location of the planets good to 1 arcmin.
D) Described the meaning of force by three laws.
E) Devised the best Earth-centered (geocentric) model of the solar system using epicycles
F) Found the Sun had flaws (sun spots) and that the Sun rotates.
elipses
A newly discovered planet orbits a distant star with the same mass as the Sun at an average distance of 122 million kilometers. Its orbital eccentricity is 0.5.
1. Find the planet's orbital period. Express your answer in years to three significant figures.
2. Find the planet's nearest and farthest orbital distances from its star. Express your answers in millions of kilometers to three significant figures separated by a comma.
Include appropriate units in your final answer. Round off your final answer to two decimal places. Box your final answer.
Follow the given formulas
2. An electric fan is rotating at a constant 72,000 meters per hour, making one complete rotation in 0.17 seconds.
(a) What is the magnitude of the speed of the bug sitting on one of fan's blades? (b) What is the magnitude of
the acceleration of the bug sitting on one of fan's blades?
Chapter 3 Solutions
Essential Cosmic Perspective
Ch. 3 - Prob. 1VSCCh. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - Use the information in the graphs to answer the...Ch. 3 - In what way is scientific thinking natural to all...Ch. 3 - Prob. 2EAPCh. 3 - What is a lunar calendar? How can it be kept...
Ch. 3 - What do we mean by a model in science? Briefly...Ch. 3 - What do we mean by the Ptolemaic model? How did...Ch. 3 - What was the Copernican revolution, and how did it...Ch. 3 - What is an ellipse? Define its foci, semimajor...Ch. 3 - State and explain the meaning of each of Kepler’s...Ch. 3 - Describe the three hallmarks of science and...Ch. 3 - What is the difference between a hypothesis and a...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Each of the following statements makes some type...Ch. 3 - Prob. 20EAPCh. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Choose the best answer to each of the following....Ch. 3 - Prob. 32EAPCh. 3 - The Importance of Ancient Astronomy. Why was...Ch. 3 - The Impact of Science. The modern world is filled...Ch. 3 - Prob. 35EAPCh. 3 - Earth’s Shape. It took thousands of years for...Ch. 3 - Prob. 38EAPCh. 3 - Prob. 39EAPCh. 3 - Prob. 40EAPCh. 3 - Prob. 41EAPCh. 3 - Prob. 42EAPCh. 3 - Prob. 43EAPCh. 3 - Halley Orbit. Halley’s comet orbits the Sun every...
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- What is retrograde motion? How did the geocentric theory explain these motions? How did the heliocentric theory explain these motions?arrow_forwardThe table below presents the semi-major axis (a) and Actual orbital period for all of the major planets in the solar system. Cube for each planet the semi-major axis in Astronomical Units. Then take the square root of this number to get the Calculated orbital period of each planet. Fill in the final row of data for each planet. Table of Data for Kepler’s Third Law: Table of Data for Kepler’s Third Law: Planet aau = Semi-Major Axis (AU) Actual Planet Calculated Planet Period (Yr) Period (Yr) __________ ______________________ ___________ ________________ Mercury 0.39 0.24 Venus 0.72 0.62 Earth 1.00 1.00 Mars 1.52 1.88 Jupiter…arrow_forwardWhat do we mean by apparent retrograde motion of planets? Why was it difficult for ancient astronomers to explain? How do we explain it today?arrow_forward
- State and explain the implications of each of Kepler's three laws of planetary motion.arrow_forwardAnswer it correctly please. Explain your answer. I will rate accordingly with multiple votes.arrow_forwardKepler's 1st law says that our Solar System's planets orbit in ellipses around the Sun where the closest distance to the Sun is called perihelion. Suppose I tell you that there is a planet with a perihelion distance of 2 AU and a semi-major axis of 1.5 AU. Does this make physical sense? Explain why or why not.arrow_forward
- Use three decimals throughout your solution and round answers to threedecimal places. Show complete solution. Box your final answers.arrow_forwardHow does Keplers first law of planetary motion overthrow one of the basic beliefs of classical astronomy? How about Keplers second law?arrow_forwardHow Do We Know? Describe the differences between a hypothesis, a theory, and a law. Give an example of each.arrow_forward
- Explain how Copernicus’s heliocentric model if the solar system explained the retrograde motion if the planets compared to Ptolemy’s geocentric model.arrow_forwardWrite down Kepler’s three laws of planetary motion. Why was it important realize that planets farther away from the sun travel slower through space than planets closer to the sun?arrow_forwardExplain the geocentric view of the universe.arrow_forward
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