This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: The wavelength of a ruby laser is 694.3 nm. What is the energy difference between the two energy ... (Read 82 times)

rmenurse

  • Hero Member
  • *****
  • Posts: 513
on: Jul 29, 2018
The wavelength of a ruby laser is 694.3 nm.
 
  What is the energy difference between the two energy states involved in laser action? (c = 2.9979  108 m/s, h = 6.626  10-34 J  s, 1 eV = 1.6022  10-19 J)
  A) 1.537 eV
  B) 1.646 eV
  C) 1.786 eV
  D) 1.812 eV
  E) 3.572 eV

Question 2

According to the second law of thermodynamics, the entropy of any system always increases.
 
  A) True B) False


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

steff9894

  • Sr. Member
  • ****
  • Posts: 337
Reply #1 on: Jul 29, 2018
Answer to Question 1

C

Answer to Question 2

B


rmenurse

  • Member
  • Posts: 513
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

T4T

  • Member
  • Posts: 348
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The B-complex vitamins and vitamin C are not stored in the body and must be replaced each day.

Did you know?

Barbituric acid, the base material of barbiturates, was first synthesized in 1863 by Adolph von Bayer. His company later went on to synthesize aspirin for the first time, and Bayer aspirin is still a popular brand today.

Did you know?

The first oncogene was discovered in 1970 and was termed SRC (pronounced "SARK").

Did you know?

Addicts to opiates often avoid treatment because they are afraid of withdrawal. Though unpleasant, with proper management, withdrawal is rarely fatal and passes relatively quickly.

Did you know?

IgA antibodies protect body surfaces exposed to outside foreign substances. IgG antibodies are found in all body fluids. IgM antibodies are the first type of antibody made in response to an infection. IgE antibody levels are often high in people with allergies. IgD antibodies are found in tissues lining the abdomen and chest.

A turbocharger uses some of the heat energy that would normally be wasted. A turbocharger uses some of the heat energy that would normally be wasted.
Energy Transfer Processes: Free Convection Energy Transfer Processes: Free Convection
Energy flow and chemical cycling Energy flow and chemical cycling
The Visible Spectrum of Electromagnetic Energy The Visible Spectrum of Electromagnetic Energy
How much energy is evolved during the reaction of 53.4 g of Al, according to the reaction ... How much energy is evolved during the reaction of 53.4 g of Al, according to the reaction ...
Energy flow in the light-dependent reactions of photosynthesis Energy flow in the light-dependent reactions of photosynthesis
Video: Chromosome structural organization/ Mechanisms for chromosome movement Animation

For a complete list of videos, visit our video library