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
jeka94
3 years ago
9

A focal arrangement that has a thin lens that the light passes through before traveling down the tube to the objective mirror is

a _______________.
a. Cassegrain focus
b. Newtonian focus
c. Schmidt-Cassegrain focus
d. Schmidt focus
Physics
1 answer:
erica [24]3 years ago
4 0
The correct answer for the question that is being presented above is this one: "Schmidt-Cassegrain focus." A focal arrangement that has a thin lens that the light passes through before traveling down the tube to the objective mirror is a Schmidt-Cassegrain focus.
Here are the following choices: 
a. Cassegrain focus
b. Newtonian focus
c. Schmidt-Cassegrain focus
<span>d. Schmidt focus</span>
You might be interested in
Derive an approximate formula for the mutual inductance of two circular rings of the same radius a, arranged like wheels on the
son4ous [18]

Answer:

Please check the attached file for the derivation

Explanation:

Check the attached file

7 0
3 years ago
Describe how a change in resistance would affect the current in a circuit.
Tresset [83]

Explanation:

The relation between potential difference, current and resistance flowing in a circuit is given by using Ohm's law. It can be given by :

V = IR

I=\dfrac{V}{R}

Resistance opposes the flow of electric current in the circuit. It means that, if resistance is more, less current will flow through the circuit.

3 0
3 years ago
a steam engine work on its vicinity 285 k heat is released with the help of 225 c energy absorbed to the system what is the effi
-Dominant- [34]

The efficiency of the steam engine is 78.9% because the rest of the work input is used to overcome friction.

<h3>What is efficiency of machines?</h3>

Efficiency of a machine expresses the useful work done by a a machine as a percentage.

  • Efficiency of a machine = work output/work input × 100 %%

The efficiency of machines are always less than 100% percent due to energy losses due to friction and heat.

For the steam engine:

Work output = 225 J

Work input = 285 J

Efficiency = 225/285 × 100% = 78.9 %

Therefore, the efficiency of the steam engine is 78.9% because the rest of the work input is used to overcome friction.

Learn more about efficiency of machines at: brainly.com/question/7536036

#SPJ1

6 0
1 year ago
A boy throws a ball into the air at 10.2 m/s. Assuming that only gravity acts on the ball, how high does it rise, in m?
ozzi
Answer: 5.31 meters

Explanation: Use conservation of energy. Initial energy equals final energy. Initially, there is only kinetic energy (because height = 0 initially). At the end, kinetic energy equals 0 because at max height, there is max potential energy and the ball stops moving for a split second.

mgh = .5mv^2
Masses cancel out
gh = .5v^2
(9.8)(h) = .5(10.2^2)
Solve for h. h = 5.31 meters
5 0
3 years ago
The phosphorus cycle is the biogeochemical cycle that describes the movement of phosphorus through the lithosphere,
ludmilkaskok [199]

A

most common source of phosphates in the soil is the weathering of the mineral apatite.

Explanation:

Apatite is a group of phosphate minerals like hydroxylapatite, fluorapatite, and chlorapatite. When apatite rocks weather, they release the phosphate minerals mainly in the form of PO₄ ³⁻ . These minerals become dissolved in water (hydrosphere), where they are readily available to plants and other organisms in the biosphere. The phosphates are taken up and used in biosynthesis. When these organisms die and become buried with sediments, the phosphate gets back to the lithosphere as sedimentary rock.

Learn More:

For more on phosphorus cycle check out;

brainly.com/question/1796604

brainly.com/question/4160476

#LearnWithBrainly

5 0
3 years ago
Other questions:
  • A leaky faucet drips 40 times in 30.0 s. what is the frequency of the dripping?
    13·1 answer
  • A student places a large pot of cold water on a stove and heats it for one minute. Then she takes the pot of water off the burne
    9·1 answer
  • a canary sits 10 m from the edge of a 30-m-long clothesline, and a grackle sits 5 m from the other end. The rope is pulled by tw
    5·1 answer
  • A man begins pushing a lwan mower across a lawn from a standing start. Which is true? A. The man is decreasing the kinetic energ
    9·1 answer
  • Ac=v^2/r solve for v, solve for r
    11·2 answers
  • All of the alkali metals, Group 1, have one valence electron. which of these would represent the oxidation number of the alkali
    10·1 answer
  • VAMDNVABNATNAMDTEMCYSPLDDNHNMQTYY<br>que es bandaaa​
    7·2 answers
  • Do two magnets create magnetic force fields that allow them to interact without touching? Did the investigation answer the quest
    6·1 answer
  • In the context of studying major bodies of our solar system, what category of object does our moon best fit?.
    14·1 answer
  • How long did it take for a message sent from earth to reach the first astronauts?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!