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BaoZhu
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One way to write Coulomb's law is F=(k lQql)/(r^2) where F is the magnitude of the electric force, k is a constant, Q and q are the two electrical charges and r is the distance between them. Solve Coulomb's law for r.
 10 months ago
 10 months ago
BaoZhu Group Title
One way to write Coulomb's law is F=(k lQql)/(r^2) where F is the magnitude of the electric force, k is a constant, Q and q are the two electrical charges and r is the distance between them. Solve Coulomb's law for r.
 10 months ago
 10 months ago

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douglaswinslowcooper Group TitleBest ResponseYou've already chosen the best response.1
Multiply both sides by r^2, to get it on the left. Divide both by F, to get it on the right. r^2 = etc. r = sqrt(etc.) you should finish it.
 10 months ago

BaoZhu Group TitleBest ResponseYou've already chosen the best response.0
i did it, and it gave me r=+,(sqrt(k(Qq))/(sqrt(F)), however, the system still reads it as incorrect, is there i'm missing with the absolute value of “Qq”？
 10 months ago

douglaswinslowcooper Group TitleBest ResponseYou've already chosen the best response.1
r cannot be negative as it is a distance. Did you use Qq or (Qq)? Former is needed.
 10 months ago

BaoZhu Group TitleBest ResponseYou've already chosen the best response.0
i can not use capital Q, because wileyplus(the software) do not allow me to.
 10 months ago

douglaswinslowcooper Group TitleBest ResponseYou've already chosen the best response.1
You have the right formula for the answer.
 10 months ago

BaoZhu Group TitleBest ResponseYou've already chosen the best response.0
so, it's the system itself that is not accepting the answer?and not that my answer is incorrect?
 10 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.0
you forget the modulus inside sqrt
 10 months ago

BaoZhu Group TitleBest ResponseYou've already chosen the best response.0
so there it should be absolute value of q1q2?
 10 months ago

RaphaelFilgueiras Group TitleBest ResponseYou've already chosen the best response.0
yes , imagine ,if the value of product were negative will give you an complex radius
 10 months ago

BaoZhu Group TitleBest ResponseYou've already chosen the best response.0
will that be the answer? sorry about all the questions, i don't want to submit the answer before it is right since i only have 1 more attempt left.
 10 months ago
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