<span>a pure substance that can be separated into different elements by chemical means</span>
The moon orbiting around the earth.
we have,
wavelenght=c/f
where c= 3×10^8 m/s
f=6.3×10^12 s^-1
so wavelength=(3×10^8)/(6.3×10^12)
=0.476×10^-4 m
We know that there are 100 cm in 1 m, so we can use this to convert to meters:
Therefore we know that cm is equal to 2.41 m.
Phosphorus!!!! Hope this helps