Classes 804 & 805 are playing tug of war. Class 805 pulls to the left with a force of 45 N. Class 805 pulls to the right with a force of 50 N. What is the net force? And who won?

Because electrons have negligible mass, to account for the mass of the isotope, there must be 16 neutrons, 16 neutrally charged, massive, fundamental particles present in the sulfur nucleus. and thus finally, if we have the 32s2− ion, there are 18 electrons, 16 protons, and 16 neutrons.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.

False, as a substance changes from a solid to a liquid and from a liquid to a gas the molecules get farther apart from each other