To solve a problem using the equation for Kepler’s third law, Enrico must convert the average distance of Mars from the Sun from meters into astronomical units. How should he make the conversion?
Answer
A
multiply the average distance by 1 point 5 times 10 to the 11th power
B
multiply 1 point 5 times 10 to the 11th power by the average distance
C
divide the average distance by 1 point 5 times 10 to the 11th power
D
divide 1 point 5 times 10 to the 11th power by the average distance
Explanation
One astronomical unit is about 1.5 × 10¹¹ meters. To convert Mars’s average distance from meters into astronomical units, divide that distance by 1.5 × 10¹¹ meters per astronomical unit; this gives the distance as a number of AU.
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