3. question classical mechanics is fundamentally based on? 1.einsteins theory of relativity 2.newton's laws of motion 3.the universal motion system

Because atoms of elements in the same group of thbecause atoms of elements in the same group of the periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t fe periodic table have the same number of neutrons, they have similar properties. select the best answer from the choices provided t f

Am i correct on these two physics questions?

Whithin which type of system is neither the total mass nor the total energy conserved ? a. open b. connected c. isolated d. closed