# Physics

posted by .

A positive charge of 3.0e-6 C is pulled on by two negative charges. One, -1.9e-6 C, is 0.045 m to the north and the other, -3.7e-6 C, is 0.030 m to the south. What total force is exerted on the positive charge?

F=kqq/d^2
You would have to find the F exerted by each. The first negative charge is going to attract to the positive charge and the second negative charge is going to attract to the negative charge. Does this have anything to do with way in which you add up the F in order to find the F exerted on the positive charge?

• Physics -

I don't believe the negative charges will be attracted to each other. Yes, it has something to do with the way you add up the F but note that one negative charge is north, the other one is south; therefore, they are exactly opposite each other.

• Physics -

When I plug the numbers I have into the equations I get this:

F=(9e9)(-1.9e-6)(3e-6)/(.045^2)=-25.3 N
F=(9e9)(-3.7e-6)(3e-6)/(.030^2)=-111 N

Is this correct? If it is, in order to get the total force exerted on the positive charge, would I add this two up or subtract them from one another?

## Similar Questions

1. ### physics

Two charges are fixed in place with a separation d. One charge is positive and has nine times (n = 9) the magnitude of the other charge, which is negative. The positive charge lies to the left of the negative charge. Relative to the …
2. ### physics

A positive charge of q = 2.6 µC is pulled on by two negative charges. As shown below, one, −2.0 µC, is 0.050 m to the north and the other, −4.0 µC, is d = 0.029 m to the south. What total force is exerted on the positive …
3. ### Phyiscs - due at 11PM EST!!

Two identical conducting spheres, fixed in place, attract each other with a force of 0.114 N when their center to center separation is 45.00 cm. The spheres are then connected by a thin conducting wire. When the wire is removed, the …
4. ### Physics

A)When point charges q1 = +1.5 ìC and q2 = +5.7 ìC are brought near each other, each experiences a repulsive force of magnitude 0.77 N. Determine the distance between the charges. B)Two point charges are fixed on the y axis: a negative …
5. ### physics

Please Help, Two point charges are fixed on the y axis: a negative point charge q1 = -23 µC at y1 = +0.23 m and a positive point charge q2 at y2 = +0.33 m. A third point charge q = +7.8 µC is fixed at the origin. The net electrostatic …
6. ### Physics

Three point charges, +6.7e-6, +2.5e-6, and -3e-6, lie along the x-axis at 0 cm, 2.4 cm, and 5.7, repectively. What is the force exerted on q1 by the other two charges?
7. ### Physics

Review Conceptual Example 7 as background for this problem. Two charges are fixed in place with a separation d. One charge is positive and has twice (n = 2) the magnitude of the other charge, which is negative. The positive charge …
8. ### Physics

Three Point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. As the drawing shows(a) The charge at any one corner experiences forces from the charges …
9. ### Physics

Three Point charges have equal magnitudes, two being positive and one negative. These charges are fixed to the corners of an equilateral triangle. As the drawing shows(a) The charge at any one corner experiences forces from the charges …
10. ### Physics

Two point charges are fixed on the y axis: a negative point charge q1 = -26 µC at y1 = +0.21 m and a positive point charge q2 at y2 = +0.30 m. A third point charge q = +8.5 µC is fixed at the origin. The net electrostatic force exerted …

More Similar Questions