1. Given that Earth’s radius is 6378 km, what percentage of Earth’s radius is Ur

Question

1. Given that Earth’s radius is 6378 km, what percentage of Earth’s radius is Uranus’s radius?

87%

200%

400%

1120%

2. What is the mass of Uranus in relation to Earth?

8.487 Earth masses

12.881 Earth masses

14.558 Earth masses

22.343 Earth masses

3. What is the angular size of Uranus as seen from Earth?

3.5 arcseconds

5.3 arcseconds

9.7 arcseconds

12.4 arcseconds

4. What is Uranus’s orbit size?

5.508 au

13.763 au

19.218 au

23.910 au

5. What is the length of a sidereal day for Uranus?

1. 3286 hours

6.6525 hours

9.9254 hours

17.2400 hours

6. What is the length of a solar day for Uranus?

1.6437 hours

4.1892 hours

7.6935 hours

17.2396 hours

7. How long is a year on Uranus?

10.46 years

44.94 years

83.75 years

116.74 years

8. In which constellation is Uranus on January 1, 2014?

Pisces

Scorpio

Aries

Libra

9. What is Uranus’s current apparent magnitude?

-2.24

2.24

5.83

12.05

10. How far is Uranus currently from Earth?

12.674 au

20.06 au

38.932 au

44.295 au

87%

200%

400%

1120%

Explanation / Answer

1) Uranus's radius =25,362 km

percentage of Earth’s radius is Uranus’s radius = (25,362/6378)*100 =397.64

The nearest one is 400 %

2)Mass of Uranus = 8.681*10^25 kg

Mass of earth = 5.972*10^24 kg

mass of Uranus in relation to Earth = 8.681*10^25/(5.972*10^24) =14.54

The nearest one is 14.558 Earth masses

3) 3.5 arcseconds

4) 19.218 au

5) 17.2400 hours

6) 17.2396 hours

7) 83.75 years

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