Author Question: If the electric field and magnetic field of an electromagnetic wave are given by E = E0 sin(kx - t) ... (Read 150 times)

gonzo233

  • Hero Member
  • *****
  • Posts: 557
If the electric field and magnetic field of an electromagnetic wave are given by E = E0 sin(kx - t) and B = B0 sin(kx - t), and if the value of E0 is 51 V/m, what is the value of B0? (c = 3.0 x 108 m/s)
 
  A) 1.7  1014 T
  B) 1.7  103 T
  C) 1.7  10-14 T
  D) 1.7  104 T
  E) 1.7  10-13 T

Question 2

The objective lens of an astronomical telescope has a focal length of 60 cm and the eyepiece has a focal length of 2 cm. How far apart should the lenses be placed in order to form a final image at infinity?
 
  A) 44 cm
  B) 58 cm
  C) 76 cm
  D) 60 cm
  E) 62 cm



cat123

  • Sr. Member
  • ****
  • Posts: 310
Answer to Question 1

E

Answer to Question 2

E



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
 

Did you know?

During pregnancy, a woman is more likely to experience bleeding gums and nosebleeds caused by hormonal changes that increase blood flow to the mouth and nose.

Did you know?

It is believed that humans initially contracted crabs from gorillas about 3 million years ago from either sleeping in gorilla nests or eating the apes.

Did you know?

Green tea is able to stop the scent of garlic or onion from causing bad breath.

Did you know?

Throughout history, plants containing cardiac steroids have been used as heart drugs and as poisons (e.g., in arrows used in combat), emetics, and diuretics.

Did you know?

In women, pharmacodynamic differences include increased sensitivity to (and increased effectiveness of) beta-blockers, opioids, selective serotonin reuptake inhibitors, and typical antipsychotics.

For a complete list of videos, visit our video library