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 45 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
:D TYSM

bimper21

  • Member
  • Posts: 309
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

People often find it difficult to accept the idea that bacteria can be beneficial and improve health. Lactic acid bacteria are good, and when eaten, these bacteria improve health and increase longevity. These bacteria included in foods such as yogurt.

Did you know?

A serious new warning has been established for pregnant women against taking ACE inhibitors during pregnancy. In the study, the risk of major birth defects in children whose mothers took ACE inhibitors during the first trimester was nearly three times higher than in children whose mothers didn't take ACE inhibitors. Physicians can prescribe alternative medications for pregnant women who have symptoms of high blood pressure.

Did you know?

Nearly 31 million adults in America have a total cholesterol level that is more than 240 mg per dL.

Did you know?

Patients who have been on total parenteral nutrition for more than a few days may need to have foods gradually reintroduced to give the digestive tract time to start working again.

Did you know?

By definition, when a medication is administered intravenously, its bioavailability is 100%.

Monstrous people from distant lands depicted in a fifteenth-century European woodcut. Monstrous people from distant lands depicted in a fifteenth-century European woodcut.
A 6-point socket fits the head of a bolt or nut on all sides. A 12-point socket can round off the ... A 6-point socket fits the head of a bolt or nut on all sides. A 12-point socket can round off the ...
The relation between a raw EMG signal and its integrated version. The volunteer tensed her muscle ... The relation between a raw EMG signal and its integrated version. The volunteer tensed her muscle ...
Decimal Values as They Relate to the Location of the Decimal Point Decimal Values as They Relate to the Location of the Decimal Point
A three-point mapping cross in Drosophila melanogaster A three-point mapping cross in Drosophila melanogaster
Point Mutations Point Mutations
Video: Evolutionary tree of life Animation

For a complete list of videos, visit our video library