Electric Forces between charges

In summary, two charged balls made of pith with a mass of 0.100 g and equal magnitude of charge are hanging from threads and attracted towards each other at an angle of 18.9° and distance of 1.82 cm. The magnitude of the electric force can be determined using the equilibrium condition for one of the charges, where the vertical component of tension balances the weight and the horizontal component balances the electric force.
  • #1
thst1003
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Hanging from threads are two charged balls made of pith (a very light, spongy material that comes from inside the stems of certain plants). The balls each have a mass of 0.100 g and a charge of the same magnitude q and are attracted toward each other, as shown in the figure below. (Take θ = 18.9° and r = 1.82 cm.)

Question: What is the magnitude of the electric force?


F = k (q x q/r^2)

Please Help. I could not figure out how to solve without q.
 
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  • #2
use the equilibrium for on charge ...

ie .. vertical component of tension balances weight and horizontal balances electric force

you'll get charge ...
 

What is an electric force?

An electric force is a type of force that is exerted between two charged particles. It can be attractive or repulsive, depending on the types of charges involved.

What is the relationship between electric force and distance?

The electric force between two charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. This is known as Coulomb's Law.

How do electric forces affect the motion of charged particles?

Electric forces can cause charged particles to accelerate or decelerate, depending on the direction of the force and the initial velocity of the particle. This can result in changes in the particle's speed and direction of motion.

Can electric forces act at a distance?

Yes, electric forces can act on charged particles even when they are not in direct contact with each other. This is because electric fields, which are created by charged particles, can extend through space and exert forces on other charged particles.

What is the role of electric forces in everyday life?

Electric forces play a crucial role in many everyday phenomena, such as the functioning of electronic devices, the behavior of lightning, and the properties of materials. They are also essential for understanding and manipulating the behavior of atoms and molecules in chemistry and biology.

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