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 70 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
YES! Correct, THANKS for helping me on my review

6ana001

  • Member
  • Posts: 311
Reply 3 on: Yesterday
Gracias!

« previous next »
 

Did you know?

The FDA recognizes 118 routes of administration.

Did you know?

Interferon was scarce and expensive until 1980, when the interferon gene was inserted into bacteria using recombinant DNA technology, allowing for mass cultivation and purification from bacterial cultures.

Did you know?

Children of people with alcoholism are more inclined to drink alcohol or use hard drugs. In fact, they are 400 times more likely to use hard drugs than those who do not have a family history of alcohol addiction.

Did you know?

Eat fiber! A diet high in fiber can help lower cholesterol levels by as much as 10%.

Did you know?

Stroke kills people from all ethnic backgrounds, but the people at highest risk for fatal strokes are: black men, black women, Asian men, white men, and white women.

Pacific hagfish at 150 meters depth, California, Cordell Bank National Marine Sanctuary. Pacific hagfish at 150 meters depth, California, Cordell Bank National Marine Sanctuary.
An Installation by Fred Wilson. An Installation by Fred Wilson.
Masamichi Udagawa and Sigi Moeslinger, Antenna Design, Knoll Toboggan Chair. Masamichi Udagawa and Sigi Moeslinger, Antenna Design, Knoll Toboggan Chair.
Postage meters are used for large mailings. Postage meters are used for large mailings.
Porcelain Evaporating Dish Porcelain Evaporating Dish
PETRI DISH PETRI DISH
Video: Glucose anabolism reactions: Glycogenolysis and Gluconeogenesis

For a complete list of videos, visit our video library