Answer:
9090.90 Km/s
Explanation:
Given:
hydrogen has a spectral line at = 165 nm
Line is observed at = 170 nm
Now, from the Hubble's law
Where,
v is the velocity
Δλ = Change in wavelength = 170 - 165 = 5 nm
λ = Actual wavelength
C is the speed of the light
on substituting the respective values, we get
or
v = 90.90909 × 10⁵ m/s
or
v = 9090.90 Km/s
Answer:
Safer homes have been built.
Explanation:
Home improvements have made it easier to survive hurricanes. These improvements have helped people out for the last 20 years. So the answer is ohme improvements.
A. Singapore
The answer above is correct.
Singapore is a highly developed<span> first world city-state.</span>
Based on the timeline, the conclusion that historians will likely draw about the civilization in ancient Hong Kong is that it began much later than most ancient civilizations.
<h3>What is the Ancient Hồng Kong civilization?</h3>
The Ancient Hồng Kong has been inhabited since the Stone Age, Hong Kong was included in Imperial China about the 2nd century BC, and for the following 2,000 years, its history was identical to that of the mainland.
In modern world, the economy of Hong Kong was initially based on fishing, pearl farming, and salt manufacturing, but over time, the coastline region developed into a significant free port engaged in trade with the British Empire.
Hence, the conclusion that historians will likely draw about the civilization in ancient Hong Kong is that it began much later than most ancient civilizations.
Therefore, the Option D is correct.
Read more about Ancient Hồng Kong
brainly.com/question/11964499
#SPJ1
Answer:
Central East
Central West
Eastern
Northern
Western
Explanation:
Common sense, there are more. If you need more help, you can send me a DM. :)