Question

Part 1: Our Sun rotates about the center of our Galaxy (mG≈4×1041kg) at a distance of...

Part 1:

Our Sun rotates about the center of our Galaxy (mG≈4×1041kg) at a distance of about 3×104 light-years [1ly=(3.00×108m/s)⋅(3.16×107s/yr)⋅(1.00yr)].

What is the period of the Sun's orbital motion about the center of the Galaxy?

Express your answer using one significant figure.

Part 2:

Calculate the speed of a satellite moving in a stable circular orbit about the Earth at a height of 6000 km .

v=???? m/s

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Answer #1

asing terle,srdla。 glay (6.67 xīGU)(4x10) 15 = 12x lof Years 2- 56 8) m/s

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