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KJ4UTS
 one year ago
The force of repulsion between the south poles of two magnets is inversely proportional to the square of the distance between them. If the distance between the magnets doubles, what is the effect on the force?
KJ4UTS
 one year ago
The force of repulsion between the south poles of two magnets is inversely proportional to the square of the distance between them. If the distance between the magnets doubles, what is the effect on the force?

This Question is Closed

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1F = k / x^2 where k is a constant and x = distance so if we double the distance x what happens to the value of F?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1 replace the x in the formula by 2x

KJ4UTS
 one year ago
Best ResponseYou've already chosen the best response.0Well if we double the distance doesn't the force get weaker?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1yes  but by how much?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1replace x in the formula by 2x

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1what is the square of 2x?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1Dont jump to conclusions simplify the formula first

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444156433340:dw

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1right!! now compare the original equatiuon with thius one F = k / x^2 and F = k / 4x^2

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1the new force is weaker by how much?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1dw:1444156610758:dw

KJ4UTS
 one year ago
Best ResponseYou've already chosen the best response.0k/4x^2 so is it stronger by 4?

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1No  as you said earlier it must be weaker  the original formula is multiplied by 1/4

KJ4UTS
 one year ago
Best ResponseYou've already chosen the best response.0I see I made a mistake yeah it would be weaker so its multiplied by 1/4 then

welshfella
 one year ago
Best ResponseYou've already chosen the best response.1Yes  when you multiply something by 1/4 its the same as dividing by 4

welshfella
 one year ago
Best ResponseYou've already chosen the best response.15th option is correct yw
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