Strong evidence that the universe is expanding comes from the fact that the light emitted from nearly all distant galaxies appears to be

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?

What is similar between metals and suspensions

Which of these is the best way to manage a natural resource