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

Author Question: A radar installation operates at 9 000 MHz with an antenna (dish) that is 15 meters across. ... (Read 39 times)

ETearle

  • Hero Member
  • *****
  • Posts: 580
on: Jul 28, 2018
A radar installation operates at 9 000 MHz with an antenna (dish) that is 15 meters across. Determine the maximum distance (in kilometers) for which this system can distinguish two aircraft 100 meters apart.
 a. 7.4 km
  b. 370 km
  c. 3700 m
  d. 37 km
  e. 740 km

Question 2

A binary star system in the constellation Orion has an angular separation between the two stars of 1.2  10-5 radians. If l = 5  10-7 m, what is the smallest aperture (diameter) telescope that may be used to resolve the two stars?
 a. 10 cm
  b. 5 cm
  c. 50 cm
  d. 1 m
  e. 4 cm


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

ynlevi

  • Sr. Member
  • ****
  • Posts: 338
Reply #1 on: Jul 28, 2018
Answer to Question 1

D

Answer to Question 2

B


ETearle

  • Member
  • Posts: 580
Reply 2 on: Jul 28, 2018
Excellent

Sarahjh

  • Member
  • Posts: 370
Reply 3 on: Yesterday
:D TYSM

« previous next »
 

Did you know?

The term bacteria was devised in the 19th century by German biologist Ferdinand Cohn. He based it on the Greek word "bakterion" meaning a small rod or staff. Cohn is considered to be the father of modern bacteriology.

Did you know?

Hip fractures are the most serious consequences of osteoporosis. The incidence of hip fractures increases with each decade among patients in their 60s to patients in their 90s for both women and men of all populations. Men and women older than 80 years of age show the highest incidence of hip fractures.

Did you know?

Vampire bats have a natural anticoagulant in their saliva that permits continuous bleeding after they painlessly open a wound with their incisors. This capillary blood does not cause any significant blood loss to their victims.

Did you know?

An identified risk factor for osteoporosis is the intake of excessive amounts of vitamin A. Dietary intake of approximately double the recommended daily amount of vitamin A, by women, has been shown to reduce bone mineral density and increase the chances for hip fractures compared with women who consumed the recommended daily amount (or less) of vitamin A.

Did you know?

Patients should never assume they are being given the appropriate drugs. They should make sure they know which drugs are being prescribed, and always double-check that the drugs received match the prescription.

Cai Guo-Qiang, Project to Extend the Great Wall of China by 10,000 Meters: Project for ... Cai Guo-Qiang, Project to Extend the Great Wall of China by 10,000 Meters: Project for ...
An Installation by Fred Wilson. An Installation by Fred Wilson.
Postage meters are used for large mailings. Postage meters are used for large mailings.
A typical fuel tank installation. A typical fuel tank installation.
Doppler Radar Doppler Radar
Chalk cliffs 90 meters (300 feet) high along the shore in Dover, England, were once seafloor Chalk cliffs 90 meters (300 feet) high along the shore in Dover, England, were once seafloor
Video: Effect of blood chemistry - stimuli, hyperventilation response and hypoventilation response

For a complete list of videos, visit our video library