Anegative charge of -0.590 μc exerts an upward 0.600-n force on an unknown charge that is located 0.300 m directly below the first charge. what is the value of the unknown charge (magnitude and sign)?

To calculate the value of unknown charge, we use the formula the electric force between two charges

Here, q is unknown charge ,  ,   and

Now substituting the given values in above formula we get

or

The unknown charge is positive because the force between charges is attractive.

radiation warms things up temp rises convection currents air circ windy weather

answer would be letter choice (a),   a ball resting on a shelf. would be another example of potential energy   >   stored energy > not moving.

a ball spinning on a finger   >   kinetic energy > moving energy

a ball rolling on the ground   >   kinetic energy   > moving energy

a   ball flying through the air   > kinetic energy   >   moving energy

hope that                                         : )