# How to find the force of particles

• itsmarasilly
In summary, using Coulomb's Law, the force of attraction between a positive and a negative charge with magnitudes of 1.9 x 10^-5 C separated by a distance of 11 cm can be calculated by using the equation F = kq^2/r^2, where k is the Coulomb's constant, q represents the charges, and r is the radius. The force on each of the particles will be of equal value and point towards the other charge.
itsmarasilly

## Homework Statement

A positive and a negative charge, each of magnitude 1.9 multiplied by 10^-5 C, are separated by a distance of 11 cm. Find the force on each of the particles.

## Homework Equations

F = kq^2/r^2
r = sqrt(kq1q2/F)

## The Attempt at a Solution

i'm not sure which numbers are placed where in each equation :(

Can you start by explaining what each of the symbols in the first equation mean?

r stands for culomb's law(?), and I'm not quite sure about the others..

r stands for radius which is the distance between the two charges.
k is the columbs constant = 9x10^9
q represents the charges. We actually ignore if its positive or negative at this point so we can say q^2
normally it would be (q1)(q2) / r^2

A positive and a negative charge, each of magnitude 1.9 multiplied by 10^-5 C, are separated by a distance of 11 cm. Find the force on each of the particles.

F = kq^2/r^2 = (9 x 10^9) [(1.9 x 10^-5)^2 / (.11 m)^2)]

that should be the force of attraction between the two
so the force on one of the charges should point in the direction of the other charge
the force on the other charge should point towards the first charge. They should
both be of equal value other than positive and negative.

## 1. What is the formula for calculating the force of particles?

The formula for calculating the force between two particles is F = G(m1m2)/r^2, where G is the gravitational constant, m1 and m2 are the masses of the particles, and r is the distance between them.

## 2. How do you determine the direction of the force between particles?

The direction of the force between particles is determined by the direction of the vector connecting the two particles. It will be attractive if the particles have opposite charges or masses, and repulsive if they have the same charges or masses.

## 3. Can the force of particles change over time?

Yes, the force of particles can change over time if the distance between them changes or if one of the particles accelerates. This is known as the inverse-square law, where the force decreases as the distance between particles increases.

## 4. How can the force between particles be measured experimentally?

The force between particles can be measured experimentally using devices such as a balance scale, Coulomb's law apparatus, or a force sensor. These devices can measure the force between two charged particles or the force of gravity between two masses.

## 5. What other factors can affect the force between particles?

The force between particles can also be affected by the presence of other particles or objects in the surrounding environment. For example, in a system with multiple particles, the force between two particles may be influenced by the presence of a third particle. Additionally, the force may also be influenced by external forces such as magnetic fields or electric fields.

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