This topic contains a solution. Click here to go to the answer

Author Question: If the intensity of an electromagnetic wave is 80 MW/m2, what is the amplitude of the magnetic ... (Read 107 times)

jon_i

  • Hero Member
  • *****
  • Posts: 549
If the intensity of an electromagnetic wave is 80 MW/m2,
 
  what is the amplitude of the magnetic field of this wave? (c = 3.0 x 108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2)
  A) 0.82 mT B) 0.33 T C) 10 T D) 0.58 mT E) 14 T

Question 2

A 10-m uniform beam weighing 100 N is supported by two vertical ropes at its ends. If a 400-N person sits at a point 2.0 m from the left end of the beam, what is the tension in each rope?
 
  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

yuyiding

  • Sr. Member
  • ****
  • Posts: 357
Answer to Question 1

A

Answer to Question 2

370 N (left rope), 130 N (right rope)





 

Did you know?

If all the neurons in the human body were lined up, they would stretch more than 600 miles.

Did you know?

Symptoms of kidney problems include a loss of appetite, back pain (which may be sudden and intense), chills, abdominal pain, fluid retention, nausea, the urge to urinate, vomiting, and fever.

Did you know?

Chronic marijuana use can damage the white blood cells and reduce the immune system's ability to respond to disease by as much as 40%. Without a strong immune system, the body is vulnerable to all kinds of degenerative and infectious diseases.

Did you know?

In the United States, an estimated 50 million unnecessary antibiotics are prescribed for viral respiratory infections.

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.

For a complete list of videos, visit our video library