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goldfiish [28.3K]
2 years ago
10

Suppose we observe a cepheid variable in a distant galaxy. The cepheid brightens and dims with a regular period of about 10 days

. What can we learn from this observation?.
Physics
1 answer:
ella [17]2 years ago
6 0

Answer:

something is passing infront of it

Explanation:

something is orbiting it and blocking its light

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3 years ago
Question 1<br> 2 pts<br> Explain what causes a solution to be a strong acid.
lubasha [3.4K]

Answer:

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source: https://socratic.org/questions/how-can-a-chemical-change-be-speeded-up

6 0
3 years ago
Read 2 more answers
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