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aalyn [17]
3 years ago
5

You observe a nearby galaxy. You find that a spectral line, resulting from an electron transition in hydrogen, is shifted from i

ts normal location in the red part of the spectrum into the orange part of the spectrum. What can you conclude?
Social Studies
1 answer:
77julia77 [94]3 years ago
4 0

Answer:

The galaxy is moving closer to us

Explanation:

When there is a decrease in the wavelength of light which is being observed then it means that the object and observer are getting closer to each other.

When there is an increase in the wavelength of light which is being observed then it means that the object and observer are getting farther apart.

This phenomenon is called the Doppler effect.

Orange has shorter wavelength than red so the wavelength is getting shorter.

Hence, the galaxy is moving closer to us.

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Answer:

A, B and D

Explanation:

Man-made disasters can be prevented by applying the options above.

Alarm systems have proven to be very effective in alerting people to potential dangers in their environment whether in the home or workplace. For example, a fire alarm which goes off on the detection of smoke enable people to evacuate a building and the fire department to be called in to contain the situation.

Plans for evacuation and shelter in the event of a disaster cannot be underestimated. For example, the evacuation of people living near and around nuclear reactor sites or chemical plants should be planned for.

Regular inspection by licensed inspectors, of man-made structures goes a long way in helping determine whether those structures are still durable and reliable. For instance, regular inspection of old architectures like buildings and bridges enable us see warning signs about a potential disaster and take steps to stop it.

Implementation of a fail-safe mechanism recognises potential failures in system designs and protects against such failures resulting in a fatality.

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En had a tough time getting her sorority sisters to commit to helping her clean up after the homecoming party until she offered
wolverine [178]
I think it would be D) Reward Power.
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the answer of this question is C

7 0
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