Answer:
the length of the photon's wavelength is 0.00000072 meters.
Step-by-step explanation:
To convert a length from nanometers (nm) to meters, you need to divide the length in nanometers by 1 billion (since there are 1 billion nanometers in a meter).
Given wavelength: 720 nanometers
Length in meters = 720 nm / 1,000,000,000 (since 1 billion nanometers = 1 meter)
Length in meters = 0.00000072 meters