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=6.67 xx 10^(-11) N-m^2kg^(-2)`.
The potential energy of the system is `- 7.79 xx 10^(28)J`.The mean distance between the earth and the moon is
Options:
(a) `3.80 xx 10^8 m`
(b) `3.37 xx 10^6 m`
(c) `7.60 xx 10^4m`
(d) `1.90 xx 10^2m`