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Anggap Bumi berbentuk lingkaran. Jika jari-jari Bumi 6370 km dan percepatan gravitasi di permukaan Bumi g = 9 , 8 m / s 2 berapakah massa jenis Bumi?

Anggap Bumi berbentuk lingkaran. Jika jari-jari Bumi 6370 km dan percepatan gravitasi di permukaan Bumi berapakah massa jenis Bumi?

  1. ...space 

  2. ...space 

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R. Sobirin

Master Teacher

Mahasiswa/Alumni Universitas Indonesia

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straight rho equals straight M over straight V straight M equals fraction numerator straight g. straight R squared over denominator straight G end fraction straight M equals fraction numerator 9 comma 8 cross times left parenthesis 6370 cross times 10 cubed right parenthesis squared over denominator 6 comma 67 cross times 10 to the power of negative 11 end exponent end fraction straight M equals 5 comma 96 cross times 10 to the power of 24 space kg  straight V equals 4 over 3 πR cubed straight V equals 4 over 3 cross times 3 comma 14 cross times left parenthesis 6 comma 37 cross times 10 cubed right parenthesis cubed straight V equals fraction numerator 4 over denominator 3 end fraction cross times 3 comma 14 cross times 258 comma 47 cross times 10 to the power of 9 straight V equals 1082 comma 15 space cross times 10 to the power of 9 space straight m cubed  straight rho equals fraction numerator 5 comma 96 cross times 10 to the power of 24 space over denominator 1082 comma 15 space cross times 10 to the power of 9 end fraction straight rho equals 5 comma 5 cross times 10 to the power of 12 space kg divided by straight m cubed 

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