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3 years ago

Need help with # of protons

Physics

2 answers:

svetoff [14.1K]3 years ago

5 0

Answer:

Explanation:

helium has 2 protons and 2 neutrons

Zielflug [23.3K]3 years ago

5 0

I HOPE IT WILL HELP YOU.

Thank you.

^ - ^

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A ball bounces changing velocity from vi=15m/s[D] to vf=15m/s[U] in t=0.01s. The balls acceleration is *

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Answer:

Option (A) is correct

Explanation:

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2 years ago

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Answer:

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Explanation:

For n-=1 state hydrogen energy level is split into three componets in the presence of external magnetic field. The energies are,

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The difference of these energies

$\Delta E=2\mu B$

$\mu=9.3\times 10^{-24}J/T$ is known as Bohr's magneton.

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Therefore,

$\Delta E=2(9.3\times 10^{-24}J/T)\times 2.5 T\\\Delta E=46.5\times 10^{-24}J$

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$Delta E=46.5\times 10^{-24}J(\frac{1eV}{1.6\times 10^{-9}J } )\\Delta E=29.05\times 10^{-5}eV\\Delta E\simeq29\times 10^{-5}eV$

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