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

Author Question: A helium-neon laser emits red light having a wavelength of 6.4 10-7 m and a power of 0.5 mW. How ... (Read 257 times)

lracut11

  • Hero Member
  • *****
  • Posts: 536
on: Jul 28, 2018
A helium-neon laser emits red light having a wavelength of 6.4  10-7 m and a power of 0.5 mW. How many photons are emitted each second?
 a. 6.4  1038
  b. 1.6  1021
  c. 3.2  1025
  d. 2.6  1018
  e. 1.6  1015

Question 2

A solid state pulsed laser has an energy of 400 mJ per pulse. If its wavelength is 1.06  10-6 m, how many photons are in each pulse?
 a. 2  1025
  b. 2  1021
  c. 3  1018
  d. 6  1038
  e. 2  1018


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

mohan

  • Sr. Member
  • ****
  • Posts: 362
Reply #1 on: Jul 28, 2018
Answer to Question 1

E

Answer to Question 2

E


lracut11

  • Member
  • Posts: 536
Reply 2 on: Jul 28, 2018
Wow, this really help

kishoreddi

  • Member
  • Posts: 329
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Essential fatty acids have been shown to be effective against ulcers, asthma, dental cavities, and skin disorders such as acne.

Did you know?

More than 30% of American adults, and about 12% of children utilize health care approaches that were developed outside of conventional medicine.

Did you know?

Cancer has been around as long as humankind, but only in the second half of the twentieth century did the number of cancer cases explode.

Did you know?

According to animal studies, the typical American diet is damaging to the liver and may result in allergies, low energy, digestive problems, and a lack of ability to detoxify harmful substances.

Did you know?

In 2010, opiate painkllers, such as morphine, OxyContin®, and Vicodin®, were tied to almost 60% of drug overdose deaths.

Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth Astronomers identified 12-billion-year-old white dwarf stars only 100 light years away from Earth
Apply effleurage over eyelids. Using very light pressure, stroke the closed eyelids with your thumbs ... Apply effleurage over eyelids. Using very light pressure, stroke the closed eyelids with your thumbs ...
Summary view of the light reactions as they occur in the thylakoid Summary view of the light reactions as they occur in the thylakoid
Per capita consumption of power is high in the developed world and highest in the United States Per capita consumption of power is high in the developed world and highest in the United States
Finding the derivative using the power rule - Solutions Finding the derivative using the power rule - Solutions
Major bone (tan) and cartilage (light blue) elements of the human skeleton. Inset shows regions of v Major bone (tan) and cartilage (light blue) elements of the human skeleton. Inset shows regions of v
Video: Buffers definition and the role of buffer in the body

For a complete list of videos, visit our video library