Answer:
4.6 x 10^14 red
Explanation:
The frequency formula is speed of light divided by wavelength. The wavelength is 650 nm, and the speed of light is 3x108 m/s. When converting 650nm to meters, you obtain 6.5x10-7 m, which you may divide using the method above to produce 4.6x10^14 1/s or Hz, the unit of frequency in Physics.
