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

Author Question: An electromagnetic wave is propagating towards the west in free space. At a certain moment the ... (Read 59 times)

K@

  • Hero Member
  • *****
  • Posts: 608
on: Jul 29, 2018
An electromagnetic wave is propagating towards the west in free space. At a certain moment the direction of the magnetic field vector associated with this wave points vertically upward. What is the direction of the electric field vector?
 
  A) horizontal and pointing south
  B) vertical and pointing down
  C) horizontal and pointing north
  D) vertical and pointing upward
  E) horizontal and pointing east

Question 2

The human eye can just detect green light of wavelength 500 nm if it arrives at the retina at the rate of 2  10-18 W. How many photons arrive each second? (c = 3.0  108 m/s, h = 6.626  10-34 J  s)
 
  What will be an ideal response?


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

Christopher

  • Sr. Member
  • ****
  • Posts: 316
Reply #1 on: Jul 29, 2018
Answer to Question 1

A

Answer to Question 2

5


K@

  • Member
  • Posts: 608
Reply 2 on: Jul 29, 2018
Thanks for the timely response, appreciate it

lkanara2

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

« previous next »
 

Did you know?

It is widely believed that giving a daily oral dose of aspirin to heart attack patients improves their chances of survival because the aspirin blocks the formation of new blood clots.

Did you know?

Approximately 25% of all reported medication errors result from some kind of name confusion.

Did you know?

Bisphosphonates were first developed in the nineteenth century. They were first investigated for use in disorders of bone metabolism in the 1960s. They are now used clinically for the treatment of osteoporosis, Paget's disease, bone metastasis, multiple myeloma, and other conditions that feature bone fragility.

Did you know?

More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.

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.

Space Space
16.23 Slow-Wave Sleep Deprivation 16.23 Slow-Wave Sleep Deprivation
Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s Historian James Merrell notes several errors in Benjamin West’s famous 1771 painting, William Penn’s
Light Waves in the Electromagnetic Spectrum Light Waves in the Electromagnetic Spectrum
A typical massage room has adequate space for equipment and pleasant decorations. A typical massage room has adequate space for equipment and pleasant decorations.
Jostle the thigh, tossing from side to side, hand to hand. Causes loose, free movement in the hip ... Jostle the thigh, tossing from side to side, hand to hand. Causes loose, free movement in the hip ...
Video: How eudicots (true dicots) differ from monocots Animation

For a complete list of videos, visit our video library