3 years ago

1) Should I take vitamin D supplements in the winter?

Physics

1 answer:

iren2701 [21]3 years ago

4 0

Yes you need the light or just go outside to get it from the sun

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rewona [7]

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3 years ago

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Virty [35]

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3 years ago

local AM radio station broadcasts at a frequency of 685.9 kHz. Calculate the wavelength at which they are broadcasting. Waveleng

natta225 [31]

Answer:

λ = 437 m.

Explanation:

Since a radio wave is a electromagnetic type of wave, it propagates approximately at the same speed of light in vacuum, 3*10⁸ m/s.
As in any wave, there exist a fixed relationship between the propagation speed, the wavelength and the frequency of the radio wave, as follows:

$c = \lambda* f (1)$