Answer:
4. -121 N
5. -26 N
4.
Three point charges, +6.3 µC, +2.3 µC, and
−3.4 µC, lie along the x-axis at 0 cm, 2.6 cm,
and 5.2 cm, respectively.
What is the force exerted on q1 by the other
two charges? (To the right is positive.) The
Coulomb constant is 8.99 × 109 N · m
2
/C
2
.
Answer in units of N.
5.
What is the force exerted on q2 by the other
two charges? (To the right is positive.)
Answer in units of N
My work for 4.
Fa=8.99E9 x 6.6E-6 x 2.3E-6 / 0.026^2
Fa=192.68998521
Fb=8.99E9 x 6.3e-6 x 3.4E-6/0.052^2
Fb=71.21516272
Fa+Fb= -121
My work for 5.
Fa=8.99E9 x 2.3E-6 x 6.3E-6/0.026^2
Fa=192.9142012
Fb=8.99e9 x 2.3E-6 x 3.4E-6/0.052^2
Fb=-26
192-26 = 166.8860947?????
Number 4. is correct but I know number 5. is not!
1 answer