Planet Q rotates once in

PHYSICS · Single correct · A Level · Physics · Fields and their consequences · Fields and their consequences

Problem

Planet Q rotates once in 30 h30\,\text{h}. An artificial satellite stays fixed over the same point on the planet’s equator at an orbital radius of 4.2×107 m4.2\times10^{7}\,\text{m}. Determine the mass of planet Q. (a) 5.5×1024 kg5.5\times10^{24}\,\text{kg} (b) 1.9×1024 kg1.9\times10^{24}\,\text{kg} (c) 3.8×1024 kg3.8\times10^{24}\,\text{kg} (d) 7.6×1024 kg7.6\times10^{24}\,\text{kg}

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