1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
VashaNatasha [74]
3 years ago
5

Two stars that are 109 km apart are viewed by a telescope and found to be separated by an angle of 10-5 radians. The eyepiece of

the telescope has a focal length of 1.5 cm and the objective has a focal length of 3 meters.
Geography
1 answer:
Lapatulllka [165]3 years ago
8 0

Answer:

Distance between star and observer = 2 × 10^{16} km

Explanation:

Step 1

Angular magnification of telescope is given by formula:

             M = - f° ÷ fⁿ

where

M is angular magnification

f° is focal lens of object lens

fⁿ is  focal lens of eyepiece lens

Step 2

      M =  300cm ÷ 1.5 cm

           =  - 200 (-tive sign means image is inverted)

  M =  θⁿ ÷ θ°

   solve for θ°

  θ° =   θⁿ ÷ M

       =  10^{-5} ÷  200

       = 5 × 10^{-10} radians

Step 3

now find distance between star and observer

  Adj = opposite ÷ θ°

         =  10^{9} ÷ 5 × 10^{-10}

         =  2 × 10^{16} km

You might be interested in
12. Which of the following is an example of self-determination?
Papessa [141]

An example of self-determination is the creation of Czechia and Slovakia.

Explanation:

The self-determination basically means that through the will of the people, a certain goal is a achieved usually(not always though) in peaceful manner, in this case ending a country and creating two new ones. Initially it was one country, Czechoslovakia. This country was composed of two main groups of people, the Czechs and Slovaks, and they peacefully collaborated and coexisted as a unit for several decades.

With the fall of the communism though, it became clear that the Czechs and the Slovaks have different ideals, and that they move into different directions. The people voted in a democratic manner to end the existence of Czechoslovakia, and to form to separate countries roughly divided with a border based on ethnic base. The formation of the new countries happened indeed and it was in totally peaceful manner, with the two countries retaining good relations.

Other examples of self-determination are:

  • Creation of Macedonia, Serbia, Croatia, Slovenia, Bosnia out of Yugoslavia
  • Creation of Austria and Hungary out of the Austria-Hungary Empire
  • Creation of the Baltic states out of the Soviet Union
  • Creation of Bulgaria, Greece, Lebanon etc. from the Ottoman Empire

Learn more about what happened to Austria-Hungary and the Ottoman Empire after the World War I brainly.com/question/12291274

#learnwithBrainly

6 0
3 years ago
Who created the gravity model ap human geography?
OleMash [197]
The gravity model was created by Newton. 
6 0
3 years ago
PPPPLLLLEEEESSSEEEE HHHHEEEELLLLPPPP!" (WILL GIVE BRAINLEST)
cluponka [151]
From an economic and strategic perspective, the Strait of Malacca is one of the most important shipping lanes in the world. The strait is the main shipping channel between the Indian Ocean and the Pacific Ocean, linking major Asian economies such as India, China, Japan, Taiwan, and South Korea.

Singapore controls the smallest area of the strait, but the city-state enjoys the biggest economic benefit from shipping activities.

https://www.google.com/search?num=20&q=strait+of+malacca+significance+and+singapore&oq=strait+of+mal...


3 0
3 years ago
What factors control how much a planet's gravitational force is felt?
kotegsom [21]
Elevation, there is a lot less gravitational pull the higher up you go.

Weight- weight is actually the amount of pressure gravity has on the object. The greater the gravitational pull, the heavier the object will be.

Distance- the farther away something is, the less gravitational pull it might have on another object.

Size- the bigger the object, the greater the gravitational pull. You jump higher on the moon than you do on Earth because the earth is larger and therefore has a greater pull on objects to its surface

Hope this helps

5 0
3 years ago
Hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
Zanzabum

Hhhhhhhhhhh or HHHHHHHHHHHH both are grammatically correct

Hhhhhhhhhh is a sign of slight exasperation while HHHHHHHHHH is very high levels of frustration.

3 0
2 years ago
Other questions:
  • What must occur for a glacier to grow larger?
    12·1 answer
  • 37. In which of the following types of government would you expect to find state-controlled media?
    14·2 answers
  • What is significant about earth's distance from the sun?
    11·1 answer
  • Australasia consists primarily of Australia and _____.
    7·2 answers
  • look at both maps (one from 1885, and another one from 2020) and compare and contrast the maps. What is similar about each one?
    11·2 answers
  • Name three flowers grown in Nigeria.​
    5·2 answers
  • The island of hawaii is the youngest, and the islands get progressively older to the northwest. Plate tectonic theory explains t
    12·1 answer
  • What changes to the Earth's surface might benefit humans in a positive way?
    9·1 answer
  • Please help! <br> Thanks a bunch you guys!! :)
    10·2 answers
  • (I will mark a brainliest )
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!