Where do most of the visible electromagnetic waves on earth come from?

The differences between  a compression wave and a transverse wave?

Determine the maximum r-value of the polar equation r =3+3 cos 0

Henry, whose mass is 95 kg, stands on a bathroom scale in an elevator. the scale reads 830 n for the first 2.4 s after the elevator starts moving, then 930 n for the next 2.4 s. part a what is the elevator's speed 4.8 s after starting? express your answer with the appropriate units.