( ( If ( ( ( the ( separation distance ) ) ( between ( two objects ) ) ) ( is ( doubled ( -LRB- ( ( increased ( by ( ( a factor ) ( of 2 ) ) ) ) -RRB- ) ) ) ) ) ) ( , ( ( ( then ( the force ) ) ( of ( gravitational attraction ) ) ) ( ( is ( decreased ( by ( ( ( a factor ) ( of 4 ) ) ( -LRB- ( ( 2 ( raised ( to ( the ( second power ) ) ) ) ) -RRB- ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (NP (DT the) (NN separation) (NN distance)) (PP (IN between) (NP (CD two) (NNS objects)))) (VP (VBZ is) (VP (VBN doubled) (PRN (-LRB- -LRB-) (VP (VBN increased) (PP (IN by) (NP (NP (DT a) (NN factor)) (PP (IN of) (NP (CD 2)))))) (-RRB- -RRB-)))))) (, ,) (NP (NP (RB then) (DT the) (NN force)) (PP (IN of) (NP (JJ gravitational) (NN attraction)))) (VP (VBZ is) (VP (VBN decreased) (PP (IN by) (NP (NP (DT a) (NN factor)) (PP (IN of) (NP (CD 4))) (PRN (-LRB- -LRB-) (NP (NP (CD 2)) (VP (VBN raised) (PP (TO to) (NP (DT the) (JJ second) (NN power))))) (-RRB- -RRB-)))))) (. .)))
If the separation distance between two objects is doubled (increased by a factor of 2), then the force of gravitational attraction is decreased by a factor of 4 (2 raised to the second power).
(ROOT (S (S (VP (VBG Increasing) (NP (NP (DT the) (NN distance)) (PP (IN between) (NP (DT the) (CD two) (NNS magnets)))))) (VP (MD will) (VP (VB cause) (NP (DT a) (NN decrease)) (PP (IN in) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN attraction)) (PP (IN between) (NP (CD two) (NNS magnets))))))))) (. .)))
Increasing the distance between the two magnets will cause a decrease in the force of attraction between two magnets.