1.

If the distance between two point particles is doubled, then the gravitational force between them

Answer»

decreases by a FACTOR of 4
decreases by a factor of 2
increases by a factor of 2
increases by a factor of 4

Solution :GRAVITATIONAL force obeys an inverse-square LAW : `F_("grav") prop (1)/(r^(2))`. Therefore, if r increases by a factor of2, then `F_("grav")` decreases by a factor of `2^(2)=4`.


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