Bakit kailangan ang Linggwistiko at Sosyolinggwistiko sa pakikipagtalastasan?​

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

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?

Hydrogen and helium are both members of?