Integrated Science
Integrated Science
7th Edition
ISBN: 9780077862602
Author: Tillery, Bill W.
Publisher: Mcgraw-hill,
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Chapter 12.1, Problem 1SC

Stars twinkle and planets do not twinkle because

  1. a. planets shine by reflected light, and stars produce their own light.
  2. b. all stars are pulsing light sources.
  3. c. stars appear as point sources of light, and planets are disk sources.
  4. d. All of the above are correct.
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A satellite has a mass of 100kg and is located at 2.00 x 10^6 m above the surface of the earth. a) What is the potential energy associated with the satellite at this loction? b) What is the magnitude of the gravitational force on the satellite?
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