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zepelin [54]
2 years ago
10

If an EM wave has a wavelength of 400nm,what is its frequency? What kind of wave is it?

Physics
2 answers:
Oksanka [162]2 years ago
5 0

Answer:

Electromagnetic waves are categorized according to their frequency f or, equivalently, according to their wavelength λ = c/f. Visible light has a wavelength range from ~400 nm to ~700 nm. Violet light has a wavelength of ~400 nm, and a frequency of ~7.5*1014 Hz.

Explanation:

Feliz [49]2 years ago
3 0

electromagnetic wave 7.5 * 10 14 HZ

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if two point charges are separated by 1.5 cm and have charge values of 2.0 and -4.0, respectively, what is the value of the mutu
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Complete question:

if two point charges are separated by 1.5 cm and have charge values of +2.0 and -4.0 μC, respectively, what is the value of the mutual force between them.

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The mutual force between the two point charges is 319.64 N

Explanation:

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distance between the two point charges, r = 1.5 cm = 1.5 x 10⁻² m

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Apply Coulomb's law;

F = \frac{k|q_1||q_2|}{r^2}

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