Answer:
music is a way i can e and have time to myself to actually think and sometimember who i once was and just the other day i listened to this sand it felt like Dec again when my girlfriend mom was here long story hit me up on eboyylove if you want to hear my part of the story its been kinda cool but yeah music is mial
Explanation:
i couldn't write everything so eboyylove on Instagram
frequency's unit is Hz which mean cycles per second
given frequency * wavelength = speed of wave
speed of light = 3x10^8 m/s
wavelength = 680nm = 680x10^-9 m
frequency * 680x10^-9 m = 3x10^8 m/s
frequency = 3x10^8 / 680x10^-9
= 4.41x10^14 Hz
= 441x10^12 Hz
= 441 THz
which is the frequency for red light
