A diesel engine performs an amount of mechanical work equal to 1800 J and discards an amount of heat equal to 4500 J each cycle. How much heat must be supplied to the engine in each cycle? B) What is the thermal efficiency of the engine?

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.​

number of electrons for neutral cl

i believe the answer is a hope it and is correct