The index of refraction of light varies from color to color. true or false?

How would you place two electrons on a sphere of radius r so that the electrostatic potential energy is minimized. how would you place three electrons to solve the same problem.

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio

Debbie places two shopping carts in a cart corral she pushes the first cart which then pushes a second cart what force is being exerted