aliaze1
Oct6-07, 08:20 PM
1. The problem statement, all variables and given/known data
Two 10-cm-long thin glass rods uniformly charged to are placed side by side, 4.0 cm apart. What are the electric field strengths at distances 1.0 cm, 2.0 cm, and 3.0 cm to the right of the rod on the left, along the line connecting the midpoints of the two rods?
2. Relevant equations
[1/(4??0)] * {|Q| / [r* (r2+(0.5L)2)0.5]}
the power "0.5" is the square root; √
3. The attempt at a solution
Calculating the charge @ 2cm seemed the easiest, so here is what I did:
L=0.1m
r=0.02m
Q=1*10-8
1/(4??0) = 9*109
plugging these numbers in, I get 83562.90218, and since there are two rods, and this is equidistant from both, I added Erod#1 + Erod#2, which is the same as doubling the value, giving 167125.8044; incorrect
Two 10-cm-long thin glass rods uniformly charged to are placed side by side, 4.0 cm apart. What are the electric field strengths at distances 1.0 cm, 2.0 cm, and 3.0 cm to the right of the rod on the left, along the line connecting the midpoints of the two rods?
2. Relevant equations
[1/(4??0)] * {|Q| / [r* (r2+(0.5L)2)0.5]}
the power "0.5" is the square root; √
3. The attempt at a solution
Calculating the charge @ 2cm seemed the easiest, so here is what I did:
L=0.1m
r=0.02m
Q=1*10-8
1/(4??0) = 9*109
plugging these numbers in, I get 83562.90218, and since there are two rods, and this is equidistant from both, I added Erod#1 + Erod#2, which is the same as doubling the value, giving 167125.8044; incorrect