What is the frequency of a red laser beam, with a wavelength of 670 nm, which your astronomy instructor might use to point to slides during a lecture on galaxies?

The frequency of a red laser beam is .

Explanation:

It is given that,

Wavelength of red laser beam,

We need to find the frequency of red laser beam. It can be calculated as :

So, the frequency of a red laser beam is . Hence, this is the required solution.

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a

explanation:

no diagram was provided, but i'm guessing it's the one i've attached to my answer.

here, a mechanical force turns the rod.   this generates an electric current in the coil, which powers the bulb.