Athermally conducting, uniform and homogeneous bar of length l, cross section a, densityp and specific heat at constant press ure c is brought to a nonuniform temperature distribution by contact at one end with a 1054 hot cold reservoir temperature te. the bar is removed from the reservoirs, thermally insulated and kept at constant pressure. show that the change in entropy reservoir at a emperature th and at the other end with a at a of the bar is 99006 th tc in tc 1+in ti th te in th th t as = cp ediemyom where cp cppal, t (th + te)/2 ok0 -

47r7eudueueueurudueu37373

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.