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Question 1 1. OB associations are:
Question 2 2. An object is on a platform. The platform and the object are dropped towards the ground. What is the normal force exerted by the platform on the object as they are falling?
Question 3 3. How do we know a lot of mass exists outside the radius of our sun's orbit?
Question 4 4. These are low tides that are very low and high tides that are very high at full and new moon:
Question 5 5. The minimum velocity an object requires in order to leave the surface of, or any other point within the gravitation field of, a celestial body is known as:
Question 6 6. There is:
Question 7 7. A cluster containing over a thousand galaxies is called a(n):
Question 8 8. Which of the following statements is NOT true about weather?
Question 9 9. Transmission of light waves depends on the passing of energy from one _____ to the next.
Question 10 10. Which of these galaxy types is most likely to have the most star formation going on?
Question 11 11. A sealed vessel contains 50% oxygen, 10% carbon dioxide, and 40% nitrogen gas. The total pressure of the gas mixture is 5 atmospheres. What is the partial pressure of the carbon dioxide?
Question 12 12. As on object gets hotter, you would expect that it:
Question 13 13. Newton's Second Law of Motion states:
Question 14 14. If a star the same size as our sun has a temperature that is 10 times hotter than the surface of the sun, then:
Question 15 15. With respect to the Van Allen belts, which of these is incorrect:
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