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1.) The planet Alpha orbits the star Alminar at the distance ??=8.8×10^7 km in a circular...

1.) The planet Alpha orbits the star Alminar at the distance ??=8.8×10^7 km in a circular orbit with period ??=1.70×10^7 s.The mass of planet Alpha is ??=3.4×10^24 kg.

(a) What is the acceleration of the planet Alpha?

(b) A second planet, Beta, orbits Alminar in a circular orbit at radius ??=1.42×10^8 km. What is the orbital period of planet Beta?

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