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 61 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
:D TYSM

ASDFGJLO

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

When taking monoamine oxidase inhibitors, people should avoid a variety of foods, which include alcoholic beverages, bean curd, broad (fava) bean pods, cheese, fish, ginseng, protein extracts, meat, sauerkraut, shrimp paste, soups, and yeast.

Did you know?

To combat osteoporosis, changes in lifestyle and diet are recommended. At-risk patients should include 1,200 to 1,500 mg of calcium daily either via dietary means or with supplements.

Did you know?

Certain topical medications such as clotrimazole and betamethasone are not approved for use in children younger than 12 years of age. They must be used very cautiously, as directed by a doctor, to treat any child. Children have a much greater response to topical steroid medications.

Did you know?

Individuals are never “cured” of addictions. Instead, they learn how to manage their disease to lead healthy, balanced lives.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Effective communication and harmony between horse and rider are among the goals of proper training Effective communication and harmony between horse and rider are among the goals of proper training
body systems body systems
Action Potentials and Contractions of a Muscle Fiber Action Potentials and Contractions of a Muscle Fiber
Free Energy Rules: The Second Law in Open Systems Free Energy Rules: The Second Law in Open Systems
Development of the Reproductive Systems Development of the Reproductive Systems
Examples of invertebrate nervous systems Examples of invertebrate nervous systems
Video: Hyperglycemia Animation

For a complete list of videos, visit our video library