23 )If a planet has a radius 10 times the radius of the earth and five times the mass, what is the value of g on this planet?
A) 9.8 m/sec^2
B) 6.67x10^-11 Nxm^2/kg^2
C) 1/20 of G on earth
D) 20 times the value of g on earth
E) none of these
i said 1 /20 of g on earth is that correct?
and also another question
.What would your weight be at the center of the planet described in the first question? Greater than at the surface of the planet .Slightly less than at the surface of the planet the same as at the surface or 0 N?
i said 0 n

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plug into the equation for universal gravitation

g*m/r^2 ?

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