- The escape speed from the Earth is 1.12 x 104 m/s, so that a gas molecule travelling away from Earth near the outer boundary of the Earth's atmosphere would, at this speed, be able to escape from the Earth's gravitational field and be lost to the atmosphere. At what temperature is the average speed of (a) oxygen molecules, and (b) helium atoms equal to 1.12 x 104 m/s? (c) Can you explain why our atmos- phere contains oxygen but not helium?

- The escape speed from the Earth is 1.12 x 104 m/s, so that a gas molecule travelling away from Earth near the outer boundary of the Earth's atmosphere would, at this speed, be able to escape from the Earth's gravitational field and be lost to the atmosphere. At what temperature is the average speed of (a) oxygen molecules, and (b) helium atoms equal to 1.12 x 104 m/s? (c) Can you explain why our atmos- phere contains oxygen but not helium?

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

First law of Thermodynamics

The word thermodynamics consists of two words: thermo- and dynamics. Dynamics means the study of motion. The field of thermodynamics is all about the study of the movement of heat. In a more meaningful way, it is stated as the study of the transfer of energy. Energy transfer is something that we encounter in day-to-day life. Automobiles, chemical reactions, refrigerators, and power generators work on the basis of thermodynamic principles.

Question

The escape speed from the Earth is 1.12 x 104 m/s, so that
a gas molecule travelling away from Earth near the outer
boundary of the Earth's atmosphere would, at this speed, be
able to escape from the Earth's gravitational field and be
lost to the atmosphere. At what temperature is the average
speed of (a) oxygen molecules, and (b) helium atoms equal
to 1.12 x 10 m/s? (c) Can you explain why our atmos-
phere contains oxygen but not helium?

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