Which term represents the change of a substance from the solid phase to the liquid phase?

An electron and a proton have the same kinetic energy upon entering a region of constant magnetic field and their velocity vectors are perpendicular to the magnetic field. suppose the magnetic field is strong enough to allow the particles to circle in the field. note: you'll need to look up the masses for an electron and proton. 1) what is the ratio of the radii of their circular paths rp/re?

How do we measure or think of speed in the united states?

What is the increase in density of a medium due to wave travel?