What is the frequency of a photon of blue light, if it has a wavelength of 440 nm?

I hope you are not answer grazing.

frequency*wavelength=speed light
solve for frequency.

I do not know what you mean by answer grazing, but I genuinely need help with the question.

To determine the frequency of a photon of blue light with a wavelength of 440 nm, we can use the formula:

Frequency = Speed of Light / Wavelength

1. The speed of light (c) is a constant value, approximately equal to 299,792,458 meters per second (m/s).
2. Convert the given wavelength from nanometers (nm) to meters (m) by dividing it by 1,000,000,000 (since there are 1 billion nanometers in a meter): 440 nm / 1,000,000,000 = 0.00000044 meters.
3. Plug the values into the equation: Frequency = 299,792,458 m/s / 0.00000044 m.
4. Perform the division: Frequency ≈ 681,800,595,000,000,000 Hz (or approximately 6.82 × 10^14 Hz).

Therefore, the frequency of a photon of blue light with a wavelength of 440 nm is approximately 6.82 × 10^14 Hz.