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

Author Question: Which of the following devices use lasers? a. DVD players b. fiber optics communication systems ... (Read 118 times)

sdfghj

  • Hero Member
  • *****
  • Posts: 552
on: Jul 28, 2018
Which of the following devices use lasers?
 a. DVD players
  b. fiber optics communication systems
  c. photocopiers
  d. UPC price scanners

Question 2

In which of the following energy level transitions for a hydrogen atom is a photon emitted?
 a. n =1 to n = 2
  b. n =3 to n = 2
  c. n =2 to n = 1
  d. n =1 to n = 4
  e. n =4 to n = 3


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

fatboyy09

  • Sr. Member
  • ****
  • Posts: 358
Reply #1 on: Jul 28, 2018
Answer to Question 1

A, B, D

Answer to Question 2

B, C, E


sdfghj

  • Member
  • Posts: 552
Reply 2 on: Jul 28, 2018
Gracias!

bblaney

  • Member
  • Posts: 323
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

Side effects from substance abuse include nausea, dehydration, reduced productivitiy, and dependence. Though these effects usually worsen over time, the constant need for the substance often overcomes rational thinking.

Did you know?

Pubic lice (crabs) are usually spread through sexual contact. You cannot catch them by using a public toilet.

Did you know?

As of mid-2016, 18.2 million people were receiving advanced retroviral therapy (ART) worldwide. This represents between 43–50% of the 34–39.8 million people living with HIV.

Did you know?

The calories found in one piece of cherry cheesecake could light a 60-watt light bulb for 1.5 hours.

Did you know?

In ancient Rome, many of the richer people in the population had lead-induced gout. The reason for this is unclear. Lead poisoning has also been linked to madness.

Negative feedback as a mechanism by which homeostatic control systems operate. Negative feedback as a mechanism by which homeostatic control systems operate.
body systems body systems
Culturally Sensitive Communication Culturally Sensitive Communication
This chart shows the various lines of responsibility and how they differ in presidential and parliam This chart shows the various lines of responsibility and how they differ in presidential and parliam
Major Wind Systems: Sea and Land Breezes Major Wind Systems: Sea and Land Breezes
Comparison of Somatic and Autonomic Nervous Systems Comparison of Somatic and Autonomic Nervous Systems
Video: T cell receptors

For a complete list of videos, visit our video library