a)
force will be zero at that point where field strength is zero.
field at point x = [ k(5.4*10-6)/(x)2 ] - [ k (1.3*10-6)/(x - 0.29)2 ] = 0
5.4 / x2 = 1.3/(x - 0.29)2
5.4*x2 - 3.13*x + 0.45 = 1.3*x2
4.1*x2 - 3.13*x + 0.45 = 0
x = 0.57 or 0.19 m
and that point will be beyond 0.29 m
so x = 0.57 m
b)
now,
point will be in between charges.
so x = 0.19 m
how would I work out part a &b Problem 5: A point charge of 54 iC...
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