# Shegal

Three identical metal spheres are hung from a ceiling on rigid non-conducting rods. Sphere 1, sphere 2, and sphere 3 have charges
75 µC, −44 µC, and 50 µC, respectively. Each sphere is separated by
0.15 m.

What is the net electric force on the middle sphere due to spheres 1 and 3?

I think it's Coulomb's law:
F = kq1q2/r^2, but not sure.

1. 👍
2. 👎
3. 👁
4. ℹ️
5. 🚩
1. You seem to have forgotten to read directions.

School Subject:_________ (Examples: math, science, algebra, geography)

1. 👍
2. 👎
3. ℹ️
4. 🚩
👤
Ms. Sue
2. yes, it is coulomb's law. I assume the charges are left to right, 1,2,3

well the force on 2 from one is to the right(it repulses).
the force on 2 from 3 is attractive, so it is to the right.

So, the easy way is to figure the magnitude of each force, then ADD them, and the resultant is tso the right.

1. 👍
2. 👎
3. ℹ️
4. 🚩

## Similar Questions

1. ### Physics

Two small identical metal spheres, A and B, on insulated stands, are each given a charge of +2.4 10-6 coulomb. The distance between the spheres is 7 10-1 meter. Calculate the magnitude of the electrostatic force that the charge on

2. ### Physics

two identical metallic ball spherical shells A and B charges 4Q and -10c are kept a certain distance apart a third uncharged sphere C is first placed in contact with sphere A and then with sphere B the sphere B are bought in

3. ### Physics

Three uniform spheres are located at the corners of an equilateral triangle. Each side of the triangle has a length of 2.50 m. Two of the spheres have a mass of 4.40 kg each. The third sphere (mass unknown) is released from rest.

4. ### physics

Two conducting spheres are isolated from their surroundings. The radii of spheres A and B are R and R/2 , respectively. Initially sphere A has charge +Q , and sphere B is neutral. A wire is connected between the sphere. What is

1. ### science

Two identical metal spheres at 8 °C are put in two beakers with equal amounts of water, as shown below. Two beakers are side by side; one is labeled Beaker A and the other is labeled Beaker B. Both beakers are the same shape,

2. ### Physics

A small and a large sphere, of mass M and 3M respectively, are arranged as shown on the left side of the figure above. The spheres are then simultaneously dropped from rest. When the large sphere strikes the floor, the spheres

3. ### Physics

Two 0.20 g metal spheres are hung from a common point by non-conducting threads that are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is 20

4. ### College Physics

Metal sphere 1 has a positive charge of 7.00nC . Metal sphere 2, which is twice the diameter of sphere 1, is initially uncharged. The spheres are then connected together by a long, thin metal wire. What are the final charges on

1. ### Physics

Neutral metal sphere A, of mass 0.10kg, hangs from an insulating wire 2.0m long. An identical metal sphere B, with charge -q is brought into contact with sphere A. Sphere A goes 12 degrees away from Sphere B. Calculate the initial

2. ### physics

Two spheres A and B, where A has twice the mas of B, are projected at the same horizontal velocity off the edge of two different height shelves. Sphere A leaves from a height of 2.0 m. Sphere B leaves a shelf 1.0 m off the floor.

3. ### Physics

A metal shpere with ane excess of 11 electrons touches an identical metal sphere with an excess of 15 electrons. After the spheres touch, the number of excess electrons on the second sphere is? My book tells me it is 13, but I

4. ### physics

Two identical small spheres of mass 2.0g are fastened to the ends of an insulating thread of length 0.60m The spheres are suspended by a hook in the ceiling from the centre of the thread. The spheres are given identical electric