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calculate the gravitaional intensity and...

calculate the gravitaional intensity and graviational potential at a location which is from the surface of the Earth at a height `4` times the radius of the surface. `R_(e) = 6400 km`,
`G = 6.67 xx 10^(-11) Nm^(2) kg^(-2) , M_(e) = 6 xx 10^(24) kg`.

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