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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Please tell the mistake in this problem.

Transcribed Image Text:Ope y CH d 2Saed
Signal One 0
Draw
Design
Transtions
Animations
Side Show
Review
View
Recording Deveoper He
Share
PComme
Drath
ch
Ite te Ito
Tt Shape M Rela
Teuch
Conet
Repiy
FIGURE 30.39
openstax"
Collision transfers energy
First
Metastable
L196 eV +
AE =?
= 20.16eV
- 1.96 eV
= 18,7eV
20.61 ev
20.66 ev
Ground state
Helium
Neon
Energy levels in helium and neon. In the common helium-neon laser, an electrical discharge
pumps energy into the metastable states of both atoms. The gas mixture has about ten times
more helium atoms than neon atoms. Excited helium atoms easily de-excite by transferring
energy to neon in a collision. A population inversion in neon is achieved, allowing lasing by
the neon to occur.
hc.
DE
2.992X10 18
CC.Sam
add notes
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