A comet that is 470,000,000 km from Earth has a measured angular diameter of 0.00125 degrees. The linear diameter of this comet is ___ km.
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A comet that is 470,000,000 km from Earth has a measured angular diameter of 0.00125 degrees. The linear diameter of this comet is ___ km.
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- Could I please have some guidance on the steps for this? An undiscovered planet, many light-years from Earth, has one moon, which has a nearly circular periodic orbit. If the distance from the center of the moon to the surface of the planet is 2.450×105 km and the planet has a radius of 3.850×103 km and a mass of 4.90×1022 kg , how long (in days) does it take the moon to make one revolution around the planet? The gravitational constant is 6.67×10−11N·m2/kg2.An astronomer observes that a small moon is in circular orbit around a distant planet. If the moon has a period of 150.0 hours and an orbital radius of 3.70 x 10^7 m, what is the mass of the planet? Submit your answer in units of 10^23 kg.