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The mass of the earth is 6.00 xx 10^(24)...

The mass of the earth is `6.00 xx 10^(24) kg` and that of the moon is `7.40 xx 10^(22) kg`. The constant of gravitation `G= 6.67xx 10^(-11) N-m^(2)kg^(-2)`. The potential energy of the system is `-7.79 xx 10^(28) J`. The mean distance between the earth and moon is

A

`3.80 xx 10^(8) m`

B

`3.37 xx 10^(6) m`

C

`7.60 xx 10^(4) m`

D

`1.90 xx 10^(2) m`

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The correct Answer is:
A
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G = 6.67xx10^(-11) N m^(2)(kg)^(-2) = ………. (cm)^(3)s^(-2)g^(-1) .

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