4.3.4. set up the boundary value problem corresponding to the thermal equilibrium of an insulated semi-circular plate with unit diameter, whos curved edge is kept at 0 degrees and whose straight edge is at 50 degrees

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.​