Physics Laboratory Manual
4th Edition
ISBN: 9781133950639
Author: David Loyd
Publisher: Cengage Learning
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Chapter 25, Problem 3PLA
To determine
The SI units for pressure and volume. And the value of Boltzmann’s constant.
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(P.Ç.1.3) The figure below shows three different Maxwell Boltzmann distribution curves. Which of the following statements can be said according to these curves?
speed v
I. For the same gas at three different temperatures, T3 >T2> T1
II. For three different gases at same temperature, the relationship between the molecular masses of these gases is as M3 >M2 > M,1
III. For three different gases at same temperature, the relationship between the molecular masses of these gases is as M, >M2 > M3
IV. For the same gas at three different temperatures, T1 >T2> T3
V. For three different gases at same temperature, the relationship between the average kinetic energies of molecules of these gasses is E3 >E2 > E,
# of molecules
Consider the Universe to be spherical, mostly hydrogen gas molecules undergoing adiabatic expansion over its lifetime.
a. Using the ideal gas law and properties of adiabatic processes show T V γ − 1= C where C is a constant.
b. The current Universe extends at least 15 billion light-years in all directions (r = 1.4 x 1026m), and the current temperature of the Universe is 2.7 K. Estimate the temperature of the Universe when it was the size of a nutshell, with a radius of 2 cm.
c. If the density of the gas in the Universe, N/V, is one hydrogen atom per cubic meter, calculate the current pressure of the Universe.
d. Estimate the pressure of the Universe when it was the size of a nutshell. (You may get a calculator overflow error)
V5
Chapter 25 Solutions
Physics Laboratory Manual
Ch. 25 - Prob. 1PLACh. 25 - What are the conditions under which a real gas...Ch. 25 - Prob. 3PLACh. 25 - Which temperature scale must always be used in the...Ch. 25 - The temperature in a room is measured to be Tc =...Ch. 25 - If the volume of the room in Question 5 is 50.0 m3...Ch. 25 - A gas at constant temperature has a volume of 25.0...Ch. 25 - A gas at constant pressure has a volume of 35.0 m3...
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