B https://session mastering Physics 201 Spring 2016 Week 5 (araded) Problem 6.50
ID: 1430834 • Letter: B
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B https://session mastering Physics 201 Spring 2016 Week 5 (araded) Problem 6.50 myct/itemView?assignmentProblemID 59406505 Heis Ci « previous | 11 of 20 next 6.50 Part A The star Rho1 Caneri is 57 light-years from the earth and has a mass 0 85 times that of our sun. A planot has boen dotected in a circular orbit around Rbo Cancni with an orbital radius equal to 0 11 times the radius of the earth's orbit around the sun What are (a)the orbital speed and (bithe orbital period of the planet of Rho Cancn? km/s Submit My Answers Give Up Part B Submit My Answers Give UpExplanation / Answer
a) v^2 = GM/R = 6.67*10^–11*1.99*10^30*0.85/(0.11*1.49*10^11) = 6.88 . 10^9
v = 8.30*10^4 m/s
b) T = 2R/v = 2*0.11*1.49*10^11/8.3*10^4 = 1.24 *10^6 s ( 14.36 days )
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