Author Question: If the electric field and magnetic field of an electromagnetic wave are given by E = E0 sin(kx - t) ... (Read 124 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?

The average human gut is home to perhaps 500 to 1,000 different species of bacteria.

Did you know?

Many of the drugs used by neuroscientists are derived from toxic plants and venomous animals (such as snakes, spiders, snails, and puffer fish).

Did you know?

Not getting enough sleep can greatly weaken the immune system. Lack of sleep makes you more likely to catch a cold, or more difficult to fight off an infection.

Did you know?

In most climates, 8 to 10 glasses of water per day is recommended for adults. The best indicator for adequate fluid intake is frequent, clear urination.

Did you know?

About 3.2 billion people, nearly half the world population, are at risk for malaria. In 2015, there are about 214 million malaria cases and an estimated 438,000 malaria deaths.

For a complete list of videos, visit our video library