Aneutral pion (mass = 135 mev) decays into two back-to-back photons in its rest frame [3 points] what is the energy of each photon in the pion rest frame? a. b. [3 points] if the neutral pion has a momentum of 500 mev before it decays, and the photons from the decay are aligned along the direction of motion (i. e. the decay takes place along the direction of motion), what is the energy of each photon?

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.​

the results is a decrease in air temperature with an increase of altitude.

explanation:

which three statements are true about all alloys?