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prohojiy [21]
3 years ago
15

Why does helium have more spectral lines than hydrogen?

Physics
1 answer:
Lynna [10]3 years ago
8 0

<span>This is because Helium has two valence electrons compared to Hydrogen which has only one. Helium has more energy levels for an electron to jump thus more spectral lines to occur. The spectral lines relating to each change of energy level would be more grouped together and hence the greater chance of them falling in the visible range.</span>

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When a court has "___ ___" they can hear a case once a lower court has ruled on it.
notka56 [123]
Your answer is going to be Appellate jurisdiction.
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3 years ago
Please Help!!!<br><br> For A&amp;B
klio [65]

Answer:

A. 40N

B. 5m/s

Explanation:

A.

Impulse is equal to the area under the curve of a force vs. time graph. In this case, the area is in the shape of a triangle with base 8 (12-4=8) and perpendicular height 10:

<em>Area of a triangle = (1/2)bh</em>

A=(1/2)*8*10

=40

ANSWER: 40N

B.

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3 years ago
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3 years ago
If a 0.200-kilogram ball sits on a shelf 2.00 meters from the floor, how much mechanical energy (me) does it possess? More than
iogann1982 [59]

Answer:

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Now for potential energy we know that

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now for potential ene'rgy

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so mechanical energy is given as

Mechanical Energy = 3.92 + 0 = 3.92 J

5 0
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olya-2409 [2.1K]

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Explanation:

8 0
3 years ago
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