1. Given Earth’s Moon’s radius of 1737 km, what is Mimas’s radius in multiples o
ID: 160085 • Letter: 1
Question
1. Given Earth’s Moon’s radius of 1737 km, what is Mimas’s radius in multiples of Earth’s Moon’s radius (divide Mimas’s radius by Earth’s Moon’s radius).
0.113
0.339
1.107
1.189
2. What is the mass of Mimas?
0.0456 kg
0.456 kg
4.56 x 1012 kg
4.56 x 1019 kg
3. Given that the mass of Saturn is 5.68 x 1026 kg, what is the mass of Mimas as a ratio of Saturn’s mass?
8.028 x 10-8
8.028 x 10-3
8.028
8.028 x 108
4. What is the orbit size of Mimas?
12856.1 km
48392.8 km
185757.2 km
196493.7 km
5. What is the orbit size of Mimas in astronomical units (where 1 au= 1.5 x 108 km)?
0.0000231 au
0.00124 au
0.326 au
1.537 au
6. How long is a solar day on Mimas?
22.1182 hours
22.5993 hours
22.6181 hours
22.6201 hours
7. What is the amount of time it takes for a complete cycle of Titan?
About 1 day
About 10 days
About 16 days
About 45 days
0.113
0.339
1.107
1.189
Explanation / Answer
1. Mimas’s radius =198 km
Mimas’s radius by Earth’s Moon’s radius =198/1737 = 0.11399
Nearest answer is 0.113
2. Mass =4.56 x 1019 kg
3. Ratio = 4.56 x 1019 /(5.68 x 1026 ) = 8.028 x 10-8
4. 185757.2 km
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