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
DIA [1.3K]
3 years ago
10

Astronomers analyze starlight to determine a star’s (a) temperature; (b) composition; (c) motion; (d) all of the above.

Physics
1 answer:
wolverine [178]3 years ago
5 0

One of the characteristics of the luminous gas clouds is that they do not have direct affectation by some type of external electric or magnetic fields.

In addition, we must bear in mind that color is a variable that is depending on the gas in the mixture. Therefore its relationship with spectroscopy allows us to deduce that scientists take advantage of the wavelength spectrum to know the type of composition of one of the clouds. The speed of a cloud is measured by determining the Doppler shift of its spectral lines. From wine's law, wavelength of light emitting from the object depends on temperature of object

Therefore the correct option is D

You might be interested in
While refrigerant 410a is a near azeotropic refrigerant, it is still best when charging to remove the r-410a as a _______ from t
andreev551 [17]
While refrigerant 410a is a near azeotropic refrigerant, it is still best when charging to remove the r-410a as a liquid from the storage cylinder.
Azeotrope means a constant boiling mixture. it is a mixture of two or more liquids,by simple distillation whose proportions cannot be changed. A mixture behaving purely is azeotropic and the mixture which behave differently is called non-azeotropic.
7 0
4 years ago
a stone is thrown by a person from the top of the building, which is 200m tall. at the same time, another stone is thrown with v
solniwko [45]

Answer:

The time after which the two stones meet is tₓ = 4 s

Explanation:

Given data,

The height of the building, h = 200 m

The velocity of the stone thrown from foot of the building, U = 50 m/s

Using the II equation of motion

                             S = ut + ½ gt²

Let tₓ be the time where the two stones  meet and x be the distance covered from the top of the building

The equation for the stone dropped from top of the building becomes

                            x = 0 + ½ gtₓ²

The equation for the stone thrown from the base becomes

                S - x = U tₓ - ½ gtₓ²  (∵ the motion of the stone is in opposite direction)

Adding these two equations,

                      x + (S - x) = U tₓ

                               S = U tₓ

                               200 = 50 tₓ

∴                                  tₓ = 4 s

Hence, the time after which the two stones meet is tₓ = 4 s   

6 0
3 years ago
Despite the gases, dust, and stars that compose the universe, it is still mostly made up of ____________________.
ivann1987 [24]

Answer:

space

Explanation:

5 0
3 years ago
What causes water to move from the liquid part of the hyrdrosphere to the cyrosphere?
bezimeni [28]

Answer:

When the liquid moves through the hydrosphere, the water collects into a cloud. When it falls to the earth, turning into snow and sleet collecting in rivers and lakes.

Explanation:

Hope that helps

7 0
3 years ago
Read 2 more answers
How could you dissolve more solid solute in a saturated solution in a liquid solvent
tankabanditka [31]
If you saturated the solid it will turn into liquid and soon become an air
3 0
3 years ago
Other questions:
  • a motivated approach to dream interpretation claims that most dreamers will interpret their dreams _____.
    14·1 answer
  • The vertical displacement of the wave is measured from the ?
    15·1 answer
  • In a fusion reaction, the nuclei of two atoms join to form a single atom of a different element. In such a reaction, a fraction
    5·1 answer
  • A non-conducting sphere of radius R = 3.0 cm carries a charge Q = 2.0 mC distributed uniformly throughout its volume. At what di
    8·1 answer
  • How to find the frictional force acting on an object (not the friction coefficient)? ...?
    6·1 answer
  • What is the speed of light in a vacuum
    7·2 answers
  • A hockey player swings her hockey stick and strikes a puck. According to Newtons 3rd law of motion which of the following is a r
    8·1 answer
  • Complete the statement below.
    10·2 answers
  • A particle (mass = 4.0 g, charge = 80 mC) moves in a region of space where the electric field is uniform and is given by Ex = -2
    11·1 answer
  • The main environmental effects of ozone depletion could include all of the following except
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!