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general physics

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Neutron stars consist only of neutrons and have unbelievably high densities. A typical mass and radius for a neutron star might be 6.3 x 1028 kg and 1.6 x 103 m. (a) Find the density of such a star. (b) If a dime (V = 2.0 x 10-7 m3) were made from this material, how much would it weight (in pounds)?

  • general physics -

    ρ= m/V= 6.3•10²⁸/1.6•10³=3.93 •10²⁵ kg/m³
    m= ρV₁=3.93 •10²⁵•2 •10⁻⁷=7.875•10¹⁸ kg=17.4•10¹⁸ lb

  • general physics -

    ^ That is wrong, V does not = 1.6*10^3

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