Conceptual Physical Science Explorations
2nd Edition
ISBN: 9780321567918
Author: Paul G. Hewitt, Leslie A. Hewitt, John A Suchocki
Publisher: Addison Wesley
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Question
Chapter 7, Problem 8RAT
To determine
The correct option for the statement “The speed of satellite in an elliptical orbit”.
Expert Solution & Answer
Answer to Problem 8RAT
The correct option for the statement “The speed of satellite in an elliptical orbit” is option (c).
Explanation of Solution
A satellite in an elliptical orbit is half the time moves away from the Earth, and loses its speed and half the time when moves toward the Earth, gains its speed.
From energy conservation, when the satellite is farthest from the Earth, its distance from Earth is maximum, so potential energy becomes maximum and kinetic energy becomes minimum. When it falls back towards Earth, its potential energy decreases and kinetic energy increases.
Kinetic energy is maximum when it is closest to Earth. It means the speed of the satellite is maximum and it is minimum when the satellite is farthest from Earth. It means speed of the satellite is minimum. Thus, the speed of the satellite is not constant, it varies with its position.
Conclusion:
Therefore, the correct option for the statement “The speed of satellite in an elliptical orbit” is option (c).
Chapter 7 Solutions
Conceptual Physical Science Explorations
Ch. 7 - What connection did Newton make between a falling...Ch. 7 - What does it mean to say something moving in a...Ch. 7 - In what sense does the Moon "fall?"Ch. 7 - State Newton's law of universal gravitation in...Ch. 7 - How does the force of gravity between two bodies...Ch. 7 - How does the thickness of paint sprayed on a...Ch. 7 - Prob. 7RQCh. 7 - What is the magnitude of gravitational force...Ch. 7 - What is the magnitude of the gravitational force...Ch. 7 - What do we call the gravitational force between...
Ch. 7 - When G was first measured, the experiment was...Ch. 7 - With no gravity, a horizontally moving projectile...Ch. 7 - A ball is batted upward at an angle. What happens...Ch. 7 - With no air drag, what happens to the horizontal...Ch. 7 - How can a projectile "fall around the Earth?"Ch. 7 - Are the planets of the solar system simply...Ch. 7 - Why does the speed of a satellite undergo change...Ch. 7 - At what part of an elliptical orbit does a...Ch. 7 - What is the minimum speed for orbiting the Earth...Ch. 7 - What makes the Earth round?Ch. 7 - The planet and its much less massive moon...Ch. 7 - Three boys on three towers of the same height toss...Ch. 7 - Comment on whether or not this label on a consumer...Ch. 7 - Gravitational force acts on all bodies in...Ch. 7 - What would be the path of the moon if somehow all...Ch. 7 - Is the force of gravity stronger on a piece of...Ch. 7 - Is the force of gravity stronger on a piece of...Ch. 7 - What is the magnitude and direction of the...Ch. 7 - The Earth and the Moon are attracted to each other...Ch. 7 - What do you say to a friend who says that if...Ch. 7 - A friend says that astronauts in orbit are...Ch. 7 - Is the horizontal component of the velocity for a...Ch. 7 - A heavy crate accidentally falls from a highflying...Ch. 7 - At what point in its trajectory does a batted...Ch. 7 - A park ranger shoots a monkey hanging from a...Ch. 7 - Since Earth is gravitationally attracted to the...Ch. 7 - Prob. 15TECh. 7 - Prob. 16TECh. 7 - If a cannonball is fired from a tall mountain,...Ch. 7 - When an Earth satellite is placed into a higher...Ch. 7 - If a space vehicle circled Earth at a distance...Ch. 7 - Some people dismiss the validity of scientific...Ch. 7 - If you stood atop a ladder that was so tall you...Ch. 7 - Find the change in the force of gravity between...Ch. 7 - Find the change in the force of gravity between...Ch. 7 - Find the change in the force of gravity between...Ch. 7 - Find the change in the force of gravity between...Ch. 7 - Find the change in the force of gravity between...Ch. 7 - Consider a bright point of light located 1 m from...Ch. 7 - Calculate the force of gravity between the Earth...Ch. 7 - A 3-kg newborn baby at the Earths surface is...Ch. 7 - Students in a lab measure the speed of a steel...Ch. 7 - The force of gravity between two planets depends...Ch. 7 - When the distance between two stars is reduced by...Ch. 7 - If the Sun were twice as massive, its pull on Mars...Ch. 7 - When an astronaut in orbit is weightless, he or...Ch. 7 - When no air resistance acts on a fast-moving...Ch. 7 - Prob. 6RATCh. 7 - In circular orbit, the gravitational force on a...Ch. 7 - Prob. 8RATCh. 7 - A satellite in elliptical orbit Earth travels...Ch. 7 - A satellite in Earth orbit is above Earth's (a)...
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