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Astronomy 360

Monday, January 25 th . If you have not done so be sure to register for ARIS the homework problems for the class and complete assignment #1 by Tuesday at 11 PM. Astronomy 360. Physics 360 Geology 360 Chapter 3 Pro blems. Put in values for P, d, G, and Pi and you get ~ 2 x 10^30 kg (MKS units).

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Astronomy 360

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  1. Monday, January 25th. If you have not done so be sure to register for ARIS the homework problems for the class and complete assignment #1 by Tuesday at 11 PM. Astronomy 360 Physics 360 Geology 360 Chapter 3 Pro blems

  2. Put in values for P, d, G, and Pi and you get ~ 2 x 10^30 kg (MKS units)

  3. Test your knowledge • What is meant by inertia? • What does Newton’s first law of motion tell you about the difference between motion in a straight line and motion along a curve • How does mass differ from weight? • If your mass is 70 kg on earth what is it on the moon? • If you weight 110 pounds on the earth do you weight 110 pounds on the moon? • What is surface gravity measure? • What is the escape velocity? • A cinder block can be weightless in space. Would you want to kick it with your bare foot? Even if it is weightless, does it have mass? • Does g (the acceleration of gravity) depend on the altitude above sea level? • Explain how a large planet could have a surface gravity smaller than a smaller planet.

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