(fluctuations in the density of a gas) consider an ideal gas of n molecules which is in equilibrium within a container of volume vo. denotes n the number of molecules within any v subvolume of this container. the probability p that a given molecule is within this subvolume v is given by v/vo why? . a) what is the average number n of molecules within v? express your answer based on n, vo and v . b) find the standard deviation (δη)2 in the number of molecules in v (δη)2/n expressing your answer based on n. vo and v then calculate · c)what the response of (b) becomes when y o d) what value should the standard deviation assume according to v - vo? 0

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

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.

it is b. absorbs thermal energy