Acharged particle (q = −8.0 mc), which moves in a region where the only force acting on the particle is an electric force, is released from rest at point a. at point b the kinetic energy of the particle is equal to 4.8 j. what is the electric potential difference vb − va?

Explanation:

As we know that charge is released from rest and then at point B it is moving with kinetic energy K = 4.8 J

so here by mechanical energy conservation law we can say that gain in kinetic energy of the charge is equal to the loss in electrostatic potential energy.

so here we can say

explanation:

earth's surface is mainly heated by the absorption of infrared radiation from the sun.

evaporation occurs because molecules in liquid water are warmed ( usually by the sun) and vibrate quicker, becoming less dense and rise.

condensation occurs because molecules in water vapor are cooled and therefore vibrate more slowly thus becoming more dense and eventually fall to earth.

lines of equal barometric pressure on a weather map are called: isobars : lines of equal temp on a weather map are called: isotherms.​

b.a device that inputs heat into a cool object