Which of the following should you always use to protect yourself from hazardous moving parts of power tools and equipment

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 substances that are necessary for producing of certain hormones and that store and transport vitamins

The energy released by a nuclear fusion reaction is produced when