This topic contains a solution. Click here to go to the answer

Author Question: Because of the curvature of the earth, microwave systems that must travel over long distances need ... (Read 91 times)

TFauchery

  • Hero Member
  • *****
  • Posts: 500
Because of the curvature of the earth, microwave systems that must travel over long distances need ________.
 
  A) to operate at low frequencies
  B) to operate at high frequencies
  C) repeaters
  D) mirrors

Question 2

Electronic commerce is an interdisciplinary field.
 
  Indicate whether the statement is true or false



Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

sylvia

  • Sr. Member
  • ****
  • Posts: 331
Answer to Question 1

C

Answer to Question 2

TRUE




TFauchery

  • Member
  • Posts: 500
Reply 2 on: Jul 7, 2018
Excellent


bassamabas

  • Member
  • Posts: 294
Reply 3 on: Yesterday
Great answer, keep it coming :)

 

Did you know?

A strange skin disease referred to as Morgellons has occurred in the southern United States and in California. Symptoms include slowly healing sores, joint pain, persistent fatigue, and a sensation of things crawling through the skin. Another symptom is strange-looking, threadlike extrusions coming out of the skin.

Did you know?

Nitroglycerin is used to alleviate various heart-related conditions, and it is also the chief component of dynamite (but mixed in a solid clay base to stabilize it).

Did you know?

Every 10 seconds, a person in the United States goes to the emergency room complaining of head pain. About 1.2 million visits are for acute migraine attacks.

Did you know?

A headache when you wake up in the morning is indicative of sinusitis. Other symptoms of sinusitis can include fever, weakness, tiredness, a cough that may be more severe at night, and a runny nose or nasal congestion.

Did you know?

The first monoclonal antibodies were made exclusively from mouse cells. Some are now fully human, which means they are likely to be safer and may be more effective than older monoclonal antibodies.

For a complete list of videos, visit our video library