Can someone me on answers 1-3? my teacher didn't teach us this yet and it's graded (yeah she is one of those teachers)

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?

The necleus of an atom is made up of what subatomic particles?

Does anyone have the answers to online physics course plato course physics, semester a v3.0