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 44 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 :)

xoxo123

  • Member
  • Posts: 335
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

Hyperthyroidism leads to an increased rate of metabolism and affects about 1% of women but only 0.1% of men. For most people, this increased metabolic rate causes the thyroid gland to become enlarged (known as a goiter).

Did you know?

About one in five American adults and teenagers have had a genital herpes infection—and most of them don't know it. People with genital herpes have at least twice the risk of becoming infected with HIV if exposed to it than those people who do not have genital herpes.

Did you know?

Many supplement containers do not even contain what their labels say. There are many documented reports of products containing much less, or more, that what is listed on their labels. They may also contain undisclosed prescription drugs and even contaminants.

Did you know?

Only one in 10 cancer deaths is caused by the primary tumor. The vast majority of cancer mortality is caused by cells breaking away from the main tumor and metastasizing to other parts of the body, such as the brain, bones, or liver.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Distant Galaxies Distant Galaxies
Two-point gait. Two-point gait.
To summarize, this signal transduction pathway involves To summarize, this signal transduction pathway involves
Signal transduction pathways involving phosphoinositide turnover Signal transduction pathways involving phosphoinositide turnover
. Calculate the net electric field at point B . Calculate the net electric field at point B
A manufacturer of cat towers wishes to locate a super assembly facility to meet their cat tower ... A manufacturer of cat towers wishes to locate a super assembly facility to meet their cat tower ...
Video: The pH scale - Strong acids and Weak acids

For a complete list of videos, visit our video library