Option C is the right answer
5.77 ×
Hz is the green photon's frequency .
The distance between similar points (adjacent crests) in adjacent cycles of a waveform signal that is propagated in space is known as the wavelength. A wave's wavelength is often measured in meters (m), centimeters (cm), or millimeters (mm) (mm). The relationship between frequency and wavelength is inverse.
<h3>Given:</h3>
Wavelength of green light = 520 nm
f = c / λ
where, f = Frequency
c = Speed of light = 3 ×
m/s
λ = Wavelength of light
∴ f = c / λ
f = 
= 5.77 ×
Hz
Therefore, 5.77 ×
Hz is the green photon's frequency .
Learn more about wavelength here:
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The continental crust
Hope it helps!!
The density of the material would be 4.1 g/cm³.
Density is calculated by dividing the mass by the volume.
D=m÷v
D=45 g÷11 cm³
D=4.1 g/cm³