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chubhunter [2.5K]
3 years ago
13

A(n) _____ represents the U.S. in a foreign country.

Physics
2 answers:
Oksana_A [137]3 years ago
5 0

Answer:

B(Ambassador)

Explanation:

The president appoints ambassadors to foreign countries to represent the United States.

tensa zangetsu [6.8K]3 years ago
4 0
Ambassador i believe if not then embassy
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Read 2 more answers
What is the wavelength of a light ray that has a frequency of 7.4 E12 Hz?
const2013 [10]

The wavelength of the light ray with the given frequency is 4.05 × 10⁴nm.

Given the data in the question;

  • Frequency of the light ray; f = 7.4 * 10^{12}Hz
  • Wavelength; \lambda = \ ?

<h3>Wavelength</h3>

Wavelength can be simply defined as the spatial period of a periodic wave. When the shapes of waves are repeated, the distance over which they are repeated is called wavelength. Wavelength is expressed as;

\lambda = \frac{c}{f}

Where \lambda is wavelength, f is frequency and c is speed of light( c = 3*10^8m/s )

We substitute our values into the expression above to determine the wavelength of the light ray.

\lambda = \frac{c}{f} \\\\\lambda = \frac{3*10^8m/s}{7.4*10^{12}s^{-1}}} \\\\\lambda = \frac{3*10^8ms/s}{7.4*10^{12}}}\\\\\lambda = 4.05*10^{-5}m\\\\\lambda = 4.05*10^{4}nm

Therefore, the wavelength of the light ray with the given frequency is 4.05 × 10⁴nm.

Learn more about wavelength: brainly.com/question/16776907

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3 years ago
Unicellular<br><br> organism are
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Explanation:

Its organism are one cell I think

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