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

Author Question: The efficiency of classroom-demonstration lasers is typically A) about one percent. B) about ten ... (Read 20 times)

Wadzanai

  • Hero Member
  • *****
  • Posts: 528
on: Jul 29, 2018
The efficiency of classroom-demonstration lasers is typically
 
  A) about one percent.
  B) about ten percent.
  C) about twenty percent.
  D) more than twenty percent.

Question 2

Compared to the energy put into a laser, the energy of the laser beam is
 
  A) usually much more.
  B) much less.
  C) the same.
  D) none of the above


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Shshxj

  • Sr. Member
  • ****
  • Posts: 335
Reply #1 on: Jul 29, 2018
Answer to Question 1

Answer: A

Answer to Question 2

Answer: B


Wadzanai

  • Member
  • Posts: 528
Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

atrochim

  • Member
  • Posts: 331
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The most destructive flu epidemic of all times in recorded history occurred in 1918, with approximately 20 million deaths worldwide.

Did you know?

The use of salicylates dates back 2,500 years to Hippocrates's recommendation of willow bark (from which a salicylate is derived) as an aid to the pains of childbirth. However, overdosage of salicylates can harm body fluids, electrolytes, the CNS, the GI tract, the ears, the lungs, the blood, the liver, and the kidneys and cause coma or death.

Did you know?

In the ancient and medieval periods, dysentery killed about ? of all babies before they reach 12 months of age. The disease was transferred through contaminated drinking water, because there was no way to adequately dispose of sewage, which contaminated the water.

Did you know?

No drugs are available to relieve parathyroid disease. Parathyroid disease is caused by a parathyroid tumor, and it needs to be removed by surgery.

Did you know?

In 1885, the Lloyd Manufacturing Company of Albany, New York, promoted and sold "Cocaine Toothache Drops" at 15 cents per bottle! In 1914, the Harrison Narcotic Act brought the sale and distribution of this drug under federal control.

Demonstration of equal segregation within one meiocyte in the yeast S. cerevisiae Demonstration of equal segregation within one meiocyte in the yeast S. cerevisiae
Independent assortment produces 50 percent recombinants Independent assortment produces 50 percent recombinants
Regular staff meetings increase the efficiency of the medical office staff. Regular staff meetings increase the efficiency of the medical office staff.
Production efficiency vs. trophic efficiency Production efficiency vs. trophic efficiency
At what pH is the amino acid glycine with a Ka of 2.51 × 10-10 sixty-six (66%) percent ... At what pH is the amino acid glycine with a Ka of 2.51 × 10-10 sixty-six (66%) percent ...
Harry and Gus fish the same lake together from the same boat. Each morning Harry typically ... Harry and Gus fish the same lake together from the same boat. Each morning Harry typically ...
Video: Double Stranded DNA Molecule Animation

For a complete list of videos, visit our video library