Answer:
Peasants were allowed some freedom in hopes of
securing other feudal obligations.
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
the modern notion of childhood with its own autonomy and goes began to emerge during the 18th century Enlightenment and the Romantic Period that followed it jean jacques rousseau formulated on the Romantic attitude towards children and famous 1762 Novel and Emile or on education
100m runner (don’t mind this i need it to be 20 characters long)
