Chapter 20: Q. 26 (page 567)
A sample of neon gas has of thermal energy. Estimate the average speed of a neon atom.
Short Answer
The average spped of a neon atom is
Chapter 20: Q. 26 (page 567)
A sample of neon gas has of thermal energy. Estimate the average speed of a neon atom.
The average spped of a neon atom is
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Get started for freeFIGURE EX20.10 is a histogram showing the speeds of the molecules in a very small gas. What are
(a) the most probable speed,
(b) the average speed, and
(c) the rms speed?
Interstellar space, far from any stars, is filled with a very low density of hydrogen atoms ,not. The number density is aboutand the temperature is about.
a. Estimate the pressure in interstellar space. Give your answer in and in localid="1648635470965" .
b. What is the rms speed of the atoms?
c. What is the edge lengthlocalid="1648635477647" of anlocalid="1648637118909" cube of gas withlocalid="1648635499087" of thermal energy?
An experiment you're designing needs a gas with . You recall from your physics class that no individual gas has this value, but it occurs to you that you could produce a gas with by mixing together a monatomic gas and a diatomic gas. What fraction of the molecules need to be monatomic?
Integrated circuits are manufactured in vacuum chambers in which the air pressure is of . What are (a) the number density and (b) the mean free path of a molecule? Assume .
You are watching a science fiction movie in which the hero shrinks down to the size of an atom and fights villains while jumping from air molecule to air molecule. In one scene, the hero's molecule is about to crash head-on into the molecule on which a villain is riding. The villain's molecule is initiallymolecular radii away and, in the movie, it takesfor the molecules to collide. Estimate the air temperature required for this to be possible. Assume the molecules are nitrogen molecules, each traveling at the rms speed. Is this a plausible temperature for air?
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