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
dolphi86 [110]
2 years ago
12

What does a red shift indicate about a galaxy?

Chemistry
2 answers:
Ad libitum [116K]2 years ago
6 0
The only cause we know of that could shift the spectrum of a source toward longer wavelengths isthe source moving away from us. That's how we interpret the red shift when we see it, and that's where the whole idea of the expanding universe comes from. But ... just like gravity and the Earth going around the sun ... it can't be proved, so it's "only a theory".
shtirl [24]2 years ago
4 0
<em>When a red shift happens that means a galaxy is moving away from us.</em>
<em>Therefore the answer is D.
</em>
Hoped I helped:D
You might be interested in
4. Imagine you have a radioactive sample containing both Virtualium and decayed atoms of Virtualium. After analysis, you find it
Romashka [77]

My sample would be 4000 years old because on my graph, I had about 9 Virtualium left at trial 4 so I am guessing that it would be 4000 years old.

7 0
3 years ago
8. The following system contains 20.0 psi each of gases A and B in the end bulbs with an evacuated bulb in the centre. Both stop
Effectus [21]

Answer:

13.3

Explanation:

Before opening the stopcocks you have 40psi in total.

After that, those 40psi will be divided into 3bulbs, so 40/3=13.3psi for the system.

3 0
2 years ago
What is the purpose of the chemical ammonia (NH3) in hair dyes?
Alinara [238K]

Answer: Ammonia, an alkaline chemical, is used to raise the pH level (it's levels of acidity) of our hair during the colouring process. This then lifts the cuticles of the hair fibre and allows the colour to be deposited onto the cortex (the inner part of the hair protected by the cuticles). In hair coloring products, ammonium hydroxide is used to support the lightening action of hydrogen peroxide and to prepare hair to accept color pigments. Alkaline properties of ammonia raise the cuticle and allow peroxide and dye molecules to penetrate the hair shaft. (creds to the internet)

Explanation: Hope this helps! :D

5 0
2 years ago
¿ ppr que no podemos automedicarnos ,cuando pensamos q tenemos el virus del CIVD-19?
GREYUIT [131]

Answer:

Porque como tu no eres profesional en medicina, no sabes nada sobre las dosis de medicamentos ni de los efectos que pueden tener en tu cuerpo si se administran incorrectamente.

Explanation:

Es logico que solo vayas al medico para que te den la cura allí.

3 0
3 years ago
Which statement describes a problem with the peer review process in scientific research?
Snezhnost [94]
Its A.It can sometimes reject important new ideas or novel techniques.<span>
</span>
6 0
3 years ago
Other questions:
  • What does the Aufbau principle state?
    10·2 answers
  • What’s at the end of the leg bones?
    14·1 answer
  • A 7.73 mass % aqueous solution of ethylene glycol (HOCH2CH2OH) has a density of 1.19 g/mL. Calculate the molarity of the solutio
    12·1 answer
  • Water ionizes because: Select one: The smaller electronegative oxygen atom strips the electron from one of its hydrogen atoms, l
    8·1 answer
  • Timothée Chalamet is hot
    5·2 answers
  • What is the result of 2.58×0.12, including correct significant figures? Select the correct answer below: 0.3096 0.31 0.310 0.3
    5·2 answers
  • I guess you didn’t mean what u wrote in that song about meee
    15·2 answers
  • PLS ANSWER I WILL GIVE BRAINLY TO First!!!
    15·1 answer
  • 13. What is the photon energy associated with visible light with a wavelength of 4.25x10^-7 m?
    11·1 answer
  • What can we do to fix the climate in greenland?
    10·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!