# Physics

Two point charges are separated by 6 cm. The attractive force between them is 20 N. Find the force between them when they are separated by 12 cm. (Why can you solve this problem without knowing the magnitudes of the charges?)

1. 👍 0
2. 👎 0
3. 👁 886
1. Use the inverse square rule. You have doubled the separation distance. Look at Coulomb's law and see what that does to the force.

1. 👍 0
2. 👎 0
posted by drwls
2. i don't get it at all

1. 👍 0
2. 👎 0
posted by cray

## Similar Questions

1. ### Physics

Two point charges are separated by 6cm. The attractive force between them is 22 N. Find the force between them when they are separated by 12 cm.

asked by Sarabeth on July 8, 2011
2. ### physicss

Two point charges experience an attractive force of 5N when they are separated by 1m.what force do they experience when their separation is 2m? What is the value of the charges Using coluomb's law F=KQ1Q2/r^2 5=8.99*10^9*Q1*Q2/1

asked by David on January 10, 2016
3. ### Physics

Two tiny conducting spheres are identical and carry charges of -19.8 µC and +54.5 µC. They are separated by a distance of 2.45 cm. (a) What is the magnitude of the force that each sphere experiences, and is the force attractive

asked by Don on January 29, 2013
4. ### Physics Need Help PLEASE

Two point charges are separated by 8 cm. The attractive force between them is 14 N. If the two charges attracting each other have equal magnitude, what is the magnitude of each charge?

asked by Jake on April 9, 2012
5. ### physics

Two point charges are separated by 6.4 cm. The attractive force between them is 10 N. Suppose that the charges attracting each other have equal magnitude. Rearrange Coulomb's law and find the magnitude of each charge

asked by Christy on April 17, 2012
6. ### physics

two point charges of 2 c and -3c are separated by 6cm what is the magnitude of the electrostatic force between them? and is the force attractive or repulsive? explain and what happens to the magnitude of the force when the

asked by debra on February 4, 2013
7. ### physics

Two point charges totaling 9.00 µC exert a repulsive force of 0.300 N on one another when separated by 0.596 m. (A) What is the charge on each? (B) What is the charge on each if the force is attractive? smallest charg

asked by Justin on February 28, 2013
8. ### physics Electricity

Two tiny conducting spheres are identical and carry charges of -20.0 μC and +50.0 μC. They are separated by a distance of 2.50 cm. (a) What is the magnitude of the force that each sphere experiences, and is the force attractive

asked by frustrated on January 24, 2013
9. ### physics

1. Two point charges are separated by 6 cm. The attractive force between them is 14 N. Find the force between them when they are separated by 12 cm. 2. The SI unit of mass is the kilogram. What is the SI unit of charge? 3. The

asked by Nicole on July 14, 2010
10. ### Physics

Can you please provide me a starting point for these two questions Question One: Three charges are located on the +x axis as follows: q1 = +26 µC at x = 0 m, q2 = +13 µC at x = +2.0 m, and q3 = +42 µC at x = +3.5 m. (a) Find

asked by Jim on August 30, 2007

More Similar Questions