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]
3 years ago
12

What does a red shift indicate about a galaxy?

Chemistry
2 answers:
Ad libitum [116K]3 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]3 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
Subtract to find the temperature changes<br><br> for the water and the metal.
disa [49]

Answer:

???what metal????????????

7 0
3 years ago
Please help!
Grace [21]
The most common reaction that causes spoilage isn't a reaction at all. Molds and Bacteria are attracted to the easily found presence of water in the fruit. They find a natural place to reproduce and what they do causes spoilage.

Very few sources talk about the chemical changes that take place. If you put fruit in a refrigerator it slows the spoiling process down. That means that the chemical reaction has to be endothermic (it requires heat to occur)

The process of spoilage is speeded up by bananas for example, giving up Ethylene gas. You do not want to put a banana with tomatoes, because tomatoes are very sensitive to Ethylene. (It's OK to eat them together. They make a terrific salad. Yum).

I cannot find a definitive source that connects all this together, but the conduct of the fruit in refrigerators confirms what I am saying.

Spoilage is a very complex reaction and interaction with the environment. I have given you a hint of what happens but you should search it out to convince yourself of the outcome.
3 0
3 years ago
Which forces of attraction do you think are stronger, the attractions that are broken or the new attractions that are formed? Ex
jasenka [17]

Answer: The forces of attraction are stronger in new attractions that are formed.

Explanation:

When a chemical reaction takes place between two or more different compounds then less reactive substance is displaced by the more reactive substance.

During this process, when bonds are broken between the reactants then it means the force of attraction is less stronger. The formation of new compounds occur because force of attraction is more in these new substances due to which its atoms come closer to each other.

Thus, we can conclude that forces of attraction are stronger in new attractions that are formed.

8 0
2 years ago
PLEASE HELP. WILL MARK BRAINLIEST SERIOUSLY CONFUSED HELLPPPP PLEASE
Yuri [45]

Alright! Here are the answers:


1. C. Fluorine is more reactive than nitrogen because fluorine needs only one electron to fill its outermost shell.

2. Aluminum (Al)

6 0
3 years ago
What are two examples of a soulution?
Anni [7]
Which type of solution are you talking about?
3 0
3 years ago
Other questions:
  • Why is maple syrup more diluted than maple sap
    14·1 answer
  • Give an example of how environmental science might involve geology and chemistry.
    8·1 answer
  • What is the purpose of an adaptation
    15·1 answer
  • Explain why water has a higher boiling point than carbon iv oxide and the two are simple molecular structures
    10·1 answer
  • When U-238 undergoes radioactive decay by losing an alpha particle, the other product is
    9·2 answers
  • How many grams are in 23.0 moles of carbon
    8·2 answers
  • Consider the chemical equations shown here.
    8·1 answer
  • In the hydrogenation of oils the catalyst used is: <br>A. Pt<br>B. Ni <br>C. Fe<br>D. V2O5​
    8·1 answer
  • PlEasE help ASAP <br> Snskskssmskssm
    7·1 answer
  • En los espacios en blanco escribe si la reacción es de síntesis, análisis, simple sustitución o doble sustitucion
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!