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5. In September 2018, my research group found a planet orbiting the star 40 Eridani, which, in the series Star Trek, was identified as the system the character Spock was from (ee, for example, www.startrek.com/article/vulcan-like-planet-found-for-real). We measured this planets mass to be about 8.5 times larger than that of the Earth. Assuming Vulcan has the same density as Earth (5.51g/cm3), what is its radius (a) in kilometers, (b) in miles, and (c) as a multiple of Earths radius. 6. Fermi Question: How many bricks are there in Nashville?
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mass of earth -Me-5.972e +024 kg mass of planet-Mp-8.5xMe-5.076e +025kg density of the planet-p-5510- volume of planet V9.213e +021m1 aj radius of the planet r= 1 . 30e + 07 m-1 . 30 e + 04 km kg 4 (b)radius of planet r -8077.8255 miles (c) radius of earth-「=637 1000 m [r=2.040

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