The mass of the earth is 6xx10^(24) kg a...

The mass of the earth is `6xx10^(24)` kg and that of the Moon is`7.4 xx10^(22)` kg. The constant of gravitation G is `6.67 xx10^(-11) "Nm"^(2) "kg"^(-2)` The potential energy of the system is`-7.79xx10^(28)`J The mean distance between the Earth and Moon is` ..........` metre.

`3.37xx10^6 m`

`7.6xx10^4 m`

`1.9xx10^2 m`

`3.8xx10^8`

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