two positive point charges q and 4q are at x = 0 and x = l, respectively, and free to move. a third charge is placed along the x axis so that the entire three-charge system is in static equilibrium. what are the magnitude, sign, and x-coordinate of the third charge? [ -49 at x= l/3 1

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.​