# Physics

Two identical charges repel each other with a force of 10-5 N when they are 20 cm apart.

a.) What is the force on each when they are 5 cm apart?
b.) When they are 100 cm apart?

1. 👍 0
2. 👎 0
3. 👁 137
1. 1/4 the distance? must be 16 times as great.
4 times as far? must be 1/16 as much

F=kQq/distance^2

1. 👍 0
2. 👎 0
2. 25

300

1. 👍 0
2. 👎 0

## Similar Questions

1. ### Science

Two identical point charges repel each other with a force of 4N. When the charges are moved 5mm further apart, the resultant force is reduced to 1N. How far apart were the charges originally?

asked by Nonkumbulo on September 18, 2018
2. ### Atakpa science college zaki-biam

Two identical charges repel each other with a force 0.1mN and are moved additional 5.0cm a part the repulsive force is reduced to 25 x 10^-6N, (a) How far were they originally (b) what is the size of the charges

asked by Terzungwe nicholas on June 25, 2015
3. ### physic

It is said that like charges repel. You should have observed that after the sticky side of two pieces of scotch tape are pulled quickly off a table the tapes repel each other. Perhaps each tape has a different type of charge and

asked by tukoye on January 31, 2014
4. ### Phtsics

Two identical point charges are separated by a distance of 3.0 cm and they repel each other with a force of 4 X 10^-5 N. What is the new force if the distance between the point charges is doubled?

5. ### physics

Two identical small spherical conductors (point charges), separated by 0.6 m, carry a total charge of 200 mu or micro CC. They repel one another with a force of 120 N. (For the universal constant k use the value 8.99 times 109 N

asked by jasmine on September 1, 2014
6. ### science

what like charges do? like electrical charges repel each other. it doesnt fit in my crossword? An Example of an electric discharge? lightning repel

asked by molly on April 24, 2007
7. ### physics

Two charges that are 2 meters apart repel each other with a force of 2 x 10-5 newton. If the distance between the charges is decreased to 1 meter, the force of repulsion will be A) 1 x 10-5 N B) 4 x 10-5 N C) 8 x 10-5 N D) 5 x

asked by john on March 4, 2011
8. ### MEC

two charges repel each other with a force of 0.1N when they are 5cm apart. Find the forces between the same charges when they are 2cm and 8cm apart.

asked by ann on October 24, 2012
9. ### physics

Two identical small spherical conductors (point charges), separated by 0.6 m, carry a total charge of 200 mu or micro CC. They repel one another with a force of 120 N. (For the universal constant k use the value 8.99 times 109 N

asked by hannah on September 4, 2014
10. ### science

Two charges repel each other with a force of 10-5newton when they are 20cm apart. what is the force on each of them are i 3cm apart and ii when they are 100cm

asked by physics on March 17, 2017

More Similar Questions