Neutrons have a proper half-life of 610 seconds. it has been theorized that extremely energetic neutrons could be produced by collisions of ultra-energetic protons (accelerated by an unknown mechanism) with nuclei. for a collection of neutrons to reach earth with 50% surviving, what is c – v in m/s if they are created near a star cluster 10,000 light-years distant? hint: you can express βγ in terms of an extremely large quantity, solve for β and apply the binomial approximation to simplify the solution. (see one of us if you get stuck.)

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.​

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr