What types of telescope use a mirror to bring light to focus?

Answers

Answer 1

Answer: A reflecting telescope uses a series of curved mirrors to bring light to focus.

Related Questions

Do humans impact Earth's climate?
List five factors that may affect the rate of a chemical reaction
All of the following are examples of ways to improve energy efficiency of heating systems, except _______.A. Closing off rooms that aren’t in use. B. Frequently cleaning the furnace filter. C. Fixing cracks in the walls and floor. D. Opening the front door in winter to filter and clean warm air.
How to solve for vi in vf=vi+at?
Your brother is insisting that you'll never hear a sound produced behind a barrier wall at the end of your yard. You notice that the door within the wall is open and quickly explain to him that the sound will be able to reach you due to A. Reverberation B. Diffusion C. Focusing D. Diffraction

The Sun transfers energy to the atmosphere primarily by _____.conduction
convection
radiation
all of the above

Answers

Radiation is the only one that can pass through a vaccum (like space). You need a medium for conduction and convection to work. Therefore the answer is radiation.

Answer:

radiation is the answer

A hybrid car can travel 40 miles per gallon. Approximately how many gallons of fuel will the car need to travel 20 km?A. 0.3
B. 0.8
C. 2.5
D. 3.2

Answers

Answer:

correct option is A

20 km we need 0.3 gallon fuel

Explanation:

given data

gallon = 40 miles

distance = 20 km

to find out

how many gallons of fuel

solution

we know that 20 km = 12.4274 miles

and

we know here car is travel 40 miles per gallon

it mean here that

40 miles = 1 gallon

1 miles = 1/ 40 gallon

and

12.4274 miles = 1/40 × 12.4274 gallon

solve it to get gallon of 20 km or

12.4274 miles = 0.31 gallon

so in 20 km we need 0.3 gallon fuel

correct option is A

Answer:

The number of gallons are 0.3.

A is correct option.

Explanation:

Given that,

A hybrid car can travel 40 miles per gallon

We need to calculate the mile/gallon to km/gallon

Gallon is the unit of liquid and miles and kilometer are the unit of distance.

$40\ miles/gallon = 64.3738\ km/gallon$

We need to calculate the number of gallons of fuel

Number of gallon $N=(20)/(64.3738)$

$N=0.3$

Hence, The number of gallons are 0.3.

A compact disc has a radius of 6 centimeters.a. What is its circumference in meters?
b. If the cd rotates 4 times per second, what is the linear speed of a point on the outer edge of the cd? Give
your answer in meters per second.
c. What is the linear speed of a point 3 centimeters from the center of the cd? (Assume the angular speed
has not changed).

Answers

Circumference is $2\pi{r}=37.7$ (approx.)
Speed is 4 times that. That is, 150.8 cm/s or 1.508 m/s.
If we get a point at distance 3 cm, we take the radius half of that. The circumference also gets half, so does the linear speed. We get 0.754 m/s or 75.398 cm/s.

Answer:75.389

Explanation:

At which point in the life cycle of a star does nuclear fusion begin?A. Black hole
B. Main sequence
C. Nebula
D. Protostar

Answers

I would say B : main sequence is the answer . this is the answer i believe because the star will increase in size and than shine brightly and when it's done , it will get smaller turning into nebula , eventually exploding sometime around the last stage , but not the last stage of b , c, or d

i really hope that this helps you a lot.

Final answer:

The correct answer is D. Protostar.

Nuclear fusion in a star's lifecycle begins during the protostar stage. This is when the temperature and pressure of the protostar ignite nuclear fusion, transitioning into a main sequence star.

Explanation:

In the life cycle of a star, nuclear fusion begins when the star has reached the protostar stage. The initial stage in the development of a star is the nebula, which is a cloud of dust and gas. Over time, the nebula's materials collapse under gravity to form a hot core known as a protostar.

When the protostar's temperature and pressure rises, it triggers nuclear fusion and the star begins turning hydrogen into helium.

This marks the transition from a protostar to a main sequence star, which is the stage of stable nuclear fusion.

Learn more about Nuclear Fusion in Stars here:

brainly.com/question/34526270

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Jose’s lab instructor gives him a solution of sodium phosphate that is buffered to a pH of 4. Because of an error that he made while calibrating the pH meter, Jose’s measurements of the pH of the sodium phosphate solution are 5.4, 5.4, and 5.4. Which statement best describes his results?

Answers

I am thinking that maybe the problem is not with the calibration. It might be that the buffered solution is already expired since at this point the solution is already not stable and will give a different pH reading than what is expected.

Answer: The correct answer is B

What is the energy of a photon whose frequency is 6.0 x 10^20?(h=6.63 x10^-34 j•s; 1 eV=1.06x10^-19 J)

A. 1.6 MeV

B. 2.5 MeV

C. 3.3 MeV

D. 4.8 MeV