Calculate the energy for visible light of wavelength 400nm,550 nm and 700 nm. Graph energy vs. wavelength. What can be said about the relationship of energy to wavelength?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz. what wavelength is produced?

How to tell if a molecule is polar or nonpolar with electronegativity

The sun’s mass is 2.0×10^ 30 kg, its radius is 7.0×10 5 km, and it has a rotational period of approximately 28 days. if the sun should collapse into a white dwarf of radius 3.5×10 3 km, what would its period be if no mass were ejected and a sphere of uniform density can model the sun both before and after?