- #1
sonrie
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Two particles having charges of 0.600 nC and 5.40 nC are separated by a distance of 1.30 m.
A.) At what point along the line connecting the two charges is the net electric field due to the two charges equal to zero?
the electric field is zero at a point _______ m from .600nC
i found out the answer to this to be .325m. by doing the following:
E due to q1 is equal in magnitude to E due to q2 but in opposite direction
As both q1 and q2 are positive, the field is zero at a point in between them
As distance from q1 is L , distance from q2 is (1.3 - L)
kq1/L^2 = kq2/(1.2 - L)^2
(1.3 - L) / L= sq rt (q2 / q1)
(1.3 - L) = L* sq rt (q2 / q1)
1.3 = L [1+sq rt (q2 / q1)]
L = 1.3 / [1+sq rt (q2 / q1)]
L = 1.3 / [1+sq rt (5.40 / 0.600)]
L = 1.3 / [1+sq rt ( 9.00 )]
L = 1.3 / [1+ 3.0]
L = 1.3 / [ 4.0]
L=0.325 meter from 0.550 nC
Where would the net electric field be zero if one of the charges were negative.
Enter answer as a distance from the charge initially equal 0.600 nC . This is where i get lost, i don't know what to do next. please Help!
__________________
A.) At what point along the line connecting the two charges is the net electric field due to the two charges equal to zero?
the electric field is zero at a point _______ m from .600nC
i found out the answer to this to be .325m. by doing the following:
E due to q1 is equal in magnitude to E due to q2 but in opposite direction
As both q1 and q2 are positive, the field is zero at a point in between them
As distance from q1 is L , distance from q2 is (1.3 - L)
kq1/L^2 = kq2/(1.2 - L)^2
(1.3 - L) / L= sq rt (q2 / q1)
(1.3 - L) = L* sq rt (q2 / q1)
1.3 = L [1+sq rt (q2 / q1)]
L = 1.3 / [1+sq rt (q2 / q1)]
L = 1.3 / [1+sq rt (5.40 / 0.600)]
L = 1.3 / [1+sq rt ( 9.00 )]
L = 1.3 / [1+ 3.0]
L = 1.3 / [ 4.0]
L=0.325 meter from 0.550 nC
Where would the net electric field be zero if one of the charges were negative.
Enter answer as a distance from the charge initially equal 0.600 nC . This is where i get lost, i don't know what to do next. please Help!
__________________