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
Based on the map, in which direction would you expect each of the following rivers to flow the Missouri River, the Colorado Rive
agasfer [191]

Hey there! I'm happy to help!

A great way to see the direction a river runs is to see the two endpoints of that river. Whichever one is higher will most likely determine the direction the river flows just due to gravity. If a river starts in a mountain and ends in a lake that is north of the mountain, you can expect that the river flows north and not south just due to gravity.

---------------------------------------------------------------------------------

<u>MISSOURI RIVER</u>

We see that the West end this river is in the Rocky Mountain area and the other end is in the plains/plateau area. The Rocky Mountains are much higher than plains, so that means that that is where the river starts, and it will be flowing away from that. We see that the direction it goes is generally East.

---------------------------------------------------------------------------------

<u>COLORADO RIVER</u>

The West End of this river is in the plateaus and highlands while the other is in the Rocky Mountains. The Rocky Mountains, the high point, at the East end of the river, so it is going to be flowing West due to gravity.

---------------------------------------------------------------------------------

<u>RIO GRANDE</u>

This river also starts in the Rocky Mountains and appears to flow down into the highlands and plains. Since the Rocky Mountains are at the North part of this river, it is going to be flowing South.

---------------------------------------------------------------------------------

Have a wonderful day and keep on learning! :D

5 0
2 years ago
The following images show Earth and the four jovian planets of our solar system. Rank these planets from left to right based on
ycow [4]

Answer:

Beginning with Earth, then Jupiter, followed by  Saturn, then Uranus, and finally Neptune

Explanation:

The distance of these planets from the sun is as follows. This is the average distance as the distance changes with the position of the planet in its orbit.

Earth = 150 million km

Jupiter = 779 million km

Saturn = 1.43 billion km

Uranus = 2.88 billion km

Neptune = 4.5 billion km

7 0
3 years ago
Wind erosion that carries away small particles of rock is called:
TEA [102]
Deflation I believe it is
4 0
2 years ago
Read 2 more answers
50 POINTS BRAINIEST!!! Your friend just graduated from high school and wants to go to college to major in Geography. He can’t de
I am Lyosha [343]
This is only 5 points as you promised 50
8 0
3 years ago
To be considered valid, the results of a experiment must be
DedPeter [7]

Answer:

valid

Explanation:

7 0
3 years ago
Other questions:
  • The weather conditions at a given place over a long period of time is known as
    12·2 answers
  • Compare the relationship between the state and the individual in Sparta and Athens.
    10·2 answers
  • Pilgrims were also called________________because of their desire to pursue religious freedom.
    15·1 answer
  • 1.<br> What do geographers use to explain why the world cannot be put in two dimensions?
    13·1 answer
  • Which of the following investigations would shed the most light on the future distribution of organisms in temperate regions tha
    9·1 answer
  • Underline the term that accurately completes each of the following statements.
    6·1 answer
  • ‘Plants and animals adapt in order to survive in a hostile environment.’<br> Explain this statement.
    15·1 answer
  • What kind of weather would you expect in Phoenix on Wednesday?
    14·2 answers
  • Why do you think poikilothermic (cold blooded) animals are slowed down by low temperatures? (See Chapter 5.)
    11·2 answers
  • What is the length of pR?
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!