What is the force, in terms of Coulomb's constant, between two electrical charges of #-25 C# and #60 C# that are #15 m # apart?

1 Answer
Dec 22, 2015

Answer:

#6.667k# newtons

Explanation:

Coulomb's Law states that the electrostatic force between 2 point charges is directly proportional to the product of the 2 charges and inversely proportional to the square of the distance between them.
ie. #F=k(Q_1Q_2)/r^2#,
where #k=9xx10^9N.m^2//kg^2# is Coulomb's Constant.

So, in terms of Coulomb's constant, this particular force will be

#F=k(25xx60)/(15^2)#

#=6.667k# newtons

Note also that this force will be attraction since it is unlike charges.