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

Author Question: An 800-kHz radio signal is detected at a point 4.5 km distant from a transmitter tower. The ... (Read 41 times)

cartlidgeashley

  • Hero Member
  • *****
  • Posts: 572
on: Jul 29, 2018
An 800-kHz radio signal is detected at a point 4.5 km distant from a transmitter tower.
 
  The electric field amplitude of the signal at that point is 0.63 V/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. What is the magnetic field amplitude of the signal at that point? (c = 3.0 x 108 m/s, 0 = 4  10-7 T  m/A, 0 = 8.85  10-12 C2/N  m2)
  A) 2.9 nT B) 1.7 nT C) 1.3 nT D) 2.1 nT E) 2.5 nT

Question 2

By what primary heat transfer mechanism does the sun warm the earth?
 
  A) convection
  B) conduction
  C) radiation
  D) All of the above processes are equally important in combination.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

bhavsar

  • Sr. Member
  • ****
  • Posts: 351
Reply #1 on: Jul 29, 2018
Answer to Question 1

D

Answer to Question 2

C


cartlidgeashley

  • Member
  • Posts: 572
Reply 2 on: Jul 29, 2018
Great answer, keep it coming :)

lindahyatt42

  • Member
  • Posts: 322
Reply 3 on: Yesterday
Excellent

« previous next »
 

Did you know?

There are immediate benefits of chiropractic adjustments that are visible via magnetic resonance imaging (MRI). It shows that spinal manipulation therapy is effective in decreasing pain and increasing the gaps between the vertebrae, reducing pressure that leads to pain.

Did you know?

As many as 20% of Americans have been infected by the fungus known as Histoplasmosis. While most people are asymptomatic or only have slight symptoms, infection can progress to a rapid and potentially fatal superinfection.

Did you know?

The horizontal fraction bar was introduced by the Arabs.

Did you know?

Eating food that has been cooked with poppy seeds may cause you to fail a drug screening test, because the seeds contain enough opiate alkaloids to register as a positive.

Did you know?

Acetaminophen (Tylenol) in overdose can seriously damage the liver. It should never be taken by people who use alcohol heavily; it can result in severe liver damage and even a condition requiring a liver transplant.

Radio Views of Saturn Radio Views of Saturn
Radio Telescope Used for SETI Radio Telescope Used for SETI
Three-point gait. Three-point gait.
The battery was replaced in this Acura and the radio displayed “code” when the replacement ... The battery was replaced in this Acura and the radio displayed “code” when the replacement ...
Common trigger point locations, anterior and posterior. Common trigger point locations, anterior and posterior.
A spherical water tank with an inner radius of 4 m has its lowest point 3 m ... A spherical water tank with an inner radius of 4 m has its lowest point 3 m ...
Video: Introduction to Diabetes

For a complete list of videos, visit our video library