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The two stars in a binary star system have masses 2.1×1030 kg and 6.5×1030 kg. They...

The two stars in a binary star system have masses 2.1×1030 kg and 6.5×1030 kg. They are separated by 2.0×1012 m. Express your answers to two significant figures and include the appropriate units.

a) What is the system's rotation period, in years?

b) What is the speed of the lightest star?

c) What is the speed of the heaviest star?

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