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Yuliya22 [10]
3 years ago
9

How does a laser work?

Physics
1 answer:
a_sh-v [17]3 years ago
7 0

Answer:

A laser is created when the electrons in atoms in special glasses, crystals, or gases absorb energy from an electrical current or another laser and become “excited.” The excited electrons move from a lower-energy orbit to a higher-energy orbit around the atom's nucleus.

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Anna drives north at a speed of 50 km/h for the first hour. Then, she drives north for a second hour but slows down to 30 km/h.
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Answer:

The correct answer is A The distance is greater in the first hour because her speed is faster.

Explanation:

During the first hour, Anna is driving at a speed of 50 km/h. During the second hour, she is only driving at a speed of 30 km/h. The faster she goes, the farther she will go.

Hope this helps,

♥<em>A.W.E.</em><u><em>S.W.A.N.</em></u>♥

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Your answer is correct. No problem and Have a nice day
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Dont mind me

Explanation:

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An observation which is descriptive is considered
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What best describes the significance of albert einstein's famous equation famous equations e=mc2?
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