Two cars moving A and B moving with velocity of 12m/s and 8 m/s respectively in same direction. Find the relative velocity with respect to B. If they move in opposite direction, What will be the relative velocity?

Two identical 82 mg dust particles very far apart (pee 0) are moving directly toward each other at a speed of 3698 m/s. the charge on each is-719 ? c. determine how close they will get to each other. let k = 9x109 n-m2/c2 & ignore gravity.

11. you want to calculate the displacement of an object thrown over a bridge. using -10 m/s2 for acceleration due to gravity, what would be the total displacement of the object if it took 8 seconds before hitting the water?

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