the value of g on surface of earth is 9.8 metre per second square and the radius of earth is 6400 km the average density of earth in km/m^3 will be???
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Answered by
25
Density of earth = mass of earth / volume of earth
volume of earth = 4/3 πr³
= 4 x 3.14 x 6400 x 6400 x 6400 / 3
= 4 x 3.14 x 2.62144 x 10¹¹ /3
= 3.2907 x 10¹² / 3
= 1.09 x 10¹² km³ = 1.09 x 10¹⁵ m³
mass of earth = 5.9 x 10²⁴
Density = 5.9 x 10²⁴ / 1.09 x 10¹⁵
= 5.41 x 10⁹ kg/m³
volume of earth = 4/3 πr³
= 4 x 3.14 x 6400 x 6400 x 6400 / 3
= 4 x 3.14 x 2.62144 x 10¹¹ /3
= 3.2907 x 10¹² / 3
= 1.09 x 10¹² km³ = 1.09 x 10¹⁵ m³
mass of earth = 5.9 x 10²⁴
Density = 5.9 x 10²⁴ / 1.09 x 10¹⁵
= 5.41 x 10⁹ kg/m³
Answered by
11
5.29 ×10^3 kg/m^3.........
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