#IG Phy – Obital Speed (I)
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Question 1 of 10
1. Question
1 point(s)The average orbital speed v of an object in an orbit can be calculated using the formula v=T2πr.
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Question 2 of 10
2. Question
1 point(s)Mercury has the highest mean surface temperature among all the planets listed in Table 6.1.
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Question 3 of 10
3. Question
1 point(s)The orbital period of Neptune is approximately 59,800 Earth days.
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Question 4 of 10
4. Question
1 point(s)The mean surface temperature of Earth is 15°C.
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Question 5 of 10
5. Question
1 point(s)Jupiter has a higher surface gravitational field strength than Saturn.
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Question 6 of 10
6. Question
1 point(s)The speed of light in a vacuum is 3.0×108 m/s.
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Question 7 of 10
7. Question
1 point(s)The surface gravitational field strength of a planet depends on its mass and radius.
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Question 8 of 10
8. Question
1 point(s)At the position of the Moon, the field strength is about 0.0028 N/kg.
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Question 9 of 10
9. Question
1 point(s)The Moon orbits the Sun directly, not the Earth.
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Question 10 of 10
10. Question
1 point(s)As the distance from the Sun increases, the Sun\’s gravitational field strength increases.
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