What is the theorem that says that impulse equals change in momentum

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

During the experiment if you could triple the breakaway magnetic force with all other quantities left unchanged, what is the new value for the critical velocity if it was v0 (initial velocity), initially? (b) now if you halved the radius with all other quantities left unchanged, what is the new critical velocity if it was v0 (initial velocity), initially? (c) if during the experiment, critical velocity quadrupled with all other quantities left unchanged, what is the new breakaway force if its magnitude was initially f0,?