3. a -4.00-uc charge lies 20.0cm to the right of a 2.00-uc charge on the x axis. what is the force on the 2.00-uc charge?

The force on the 2.00-uC charge is

Explanation:

We know that force between two charges is given by Coulomb’s law,

Where k = Coulomb’s constant =

And q1 and q2 are the charges given to be = -4.00-uC and 2.00-uC charges

And r = distance between the charges = 20 cm = 0.2 m  

Substituting the given values in the formula we get force applied on charge,

F =   attractive force which is the required answer.

the motion of a pendulum is a classic example of mechanical energy conservation. a pendulum consists of a mass (known as a bob ) attached by a string to a pivot point. as the pendulum moves it sweeps out a circular arc, moving back and forth in a periodic fashion.