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Physics

General

Easy

Question

The mass of the earth is 6.00 $cross times 10 to the power of 24$ Kg and that of the moon is 7.40 $cross times 10 to the power of 22$ kg. The constant of gravitation G=6.667 $cross times 10 negative 11 to the power of blank$ Nm^-2 kg^--2.The potential energy of the system is -7.79 $cross times 10 to the power of 28$ Joules. the mean distance between the earth and moon is =

3.80 $\times 10^{8}$
3.37 $\times 10^{5}$
7.60 $\times 10^{8}$
1.90 $\times 10^{2}$

The correct answer is: 3.80 $cross times 10 to the power of 8$

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