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Mandarinka [93]
2 years ago
5

What is the energy of a photon whose frequency is 5.0x10^14 hz

Physics
1 answer:
igomit [66]2 years ago
5 0

Answer:

Energy of a photon is 3.313\times 10^{-19}\textrm{ J}

Explanation:

Given:

Frequency of the photon is, f=5.0\times 10^{14}\textrm{ Hz}.

Energy of a photon of frequency f is given as:

E=hf, where, h is called Planck's constant.

h = 6.626\times 10^{-34}\textrm{ J.s}

So, energy of a photon is:

E= 6.626\times 10^{-34}\times 5.0\times 10^{14}=3.313\times 10^{-19}\textrm{ J}

Therefore, the energy of a photon whose frequency is 5.0\times 10^{14} Hz is 3.313\times 10^{-19}\textrm{ J}.

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If the absolute pressure of a gas is 550.280 kPa, its gage pressure is A. 101.325 kPa. B. 651.605 kPa. C. 448.955 kPa. D. 277.28
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Answer:

Option C is the correct answer.

Explanation:

Absolute  pressure is sum of gauge pressure and atmospheric pressure.

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               P_{abs}=P_{gauge}+P_{atm}

We have

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Substituting

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Option C is the correct answer.

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Standing waves can ruin the acoustics of a concert hall if there is excessive reflection of the sound waves that the performers
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Answer:

The answer to the questions is;

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The distance 4.1 cm is equivalent to λ/4

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When the listener moves 4.1 cm he or she has left the anti-node to the node hence the faintness of the sound

The distance from the node to the anti-node is 1/4 wavelength, or 1/4×λ

Therefore 4.1 cm is λ/4

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