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Brandyn Moore PhD

Feb 20, 2025

The orbital radius of Mars is 1.52 times larger than that of Earth. What is the orbital period of Mars in Earth years?

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3 Answers

M
Major Spinka DVM

Feb 20, 2025

Kepler once said (T_E)^2 / (r_E)^3 = (T_M)^2 / (r_M)^3E stands for Earth, M for Mars.Substitute the info r_Mars = 1.53 * r_Earth.(T_E)^2 / (r_E)^3 = (T_M)^2 / (1.53r_E)^3 Cancel r_E^3 from both fractions.(T_E)^2 = (T_M)^2 / (1.53)^3(T_M)^2 = 1.53^3 * (T_E)^2Take the square root of both sidesT_M = 1.89 T_E = 1.89 years (duh)... Show More
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M
Major Spinka DVM

Feb 20, 2025

1.52³/²= 1.87398 years.it is the Sidereal year (in terms of stars) for Mars. Its synodal years is 1 – (1/1.87398) = 0.4663659 = 1/2.1441885,or 2.1441885 years = 783 days … is the time between two consecutive oppositions.... Show More
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M
Major Spinka DVM

Feb 20, 2025

Don’t you have a calculator?1.52¹·⁵ = 1.873982Even if you don’t have a calculator, there are ways to find square roots with a pencil and a piece of paper. You should find out how to do that. Most school kids learn the method in high school. Or, at least, they used to.... Show More
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