When electrons are accelerated by 2450V in an electron microscope they will have wavelengths of a)8.113nm
b)0.622nm
c)0.811nm

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.​

none, its a machine

12000j is work done

wire in brush may conduct electricity from cell to drill and vice versa electrc shock possible