Cosmic Perspective Fundamentals
Cosmic Perspective Fundamentals
3rd Edition
ISBN: 9780134988504
Author: Bennett, Jeffrey O., Donahue, M. (megan), SCHNEIDER, Nicholas, Voit, Mark
Publisher: Pearson,
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Chapter 7, Problem 6QQ

Choose the best answer to each of the following. Explain your reasoning.

To determine a planet’s average density, we can use (a) the transit method alone. (b) the astrometric and Doppler methods together. (c) the transit and Doppler methods together.

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For problems requiring calculations, show the equation you will use to solve, your work, your answer, and correct units. E F=ma 6. A woman has a mass of 30 kg on earth (9am.-9.8m/s*). What is her weight? 7. The same 30 kg woman weighs 245 N on Ceres. What is the acceleration due to gravity on Ceres? 8. A man in the "Strong Man" competition pushes a 1500 kg vehicle with an acceleration of 3 m/s2? How much force did the man exert on the vehicle? 9. Using your answer from the previous question, what force did the vehicle exert on the man?
PLEASE be clear in your answer since the last time I posted was incorrect and only answer part a, thanks.
Why I got it wrong? Please help me to provide just few summary.
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