An air bubble of radius 8.0 cm is released from the mouth of a diver. At the diver's depth the pressure is 1.30 atm . (We'll learn in chapter 13 why the diver's depth affects the pressure.) As it rises to the surface, the air inside the bubble does 42.21 J of work. The bubble rises so quickly to the surface that this process can be treated as being adiabatic. If the bubble's temperature is initially the same as the diver's body (37∘C), what is its temperature when it reaches the surface?

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.