Question

5.) A distant planet has an unknown mass is observed to have a moon with an unknown (and smaller) value for its mass. The distance between the planet and its moon is 8.1 x 109 meters. Determine the circumference of the moon’s orbit. a.) 2.5 x 1010 meters b.) 1.3 x 1014 meters c.) 5.1 x 1021 meters d.) 7.5 x 1029 meters

Answer 1

Circumference= 2πr where r is radius

= 2 x π x 8.1 x 10⁹ = 5.1 x 10¹⁰ meters

Hence the circumference of the moon’s orbit is 5.1 x 10¹⁰ meters