The angle between 3N and 4N is anywhere between 0' and 90. which value of R is not possible? and how?

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s

What will a positive and a negative charge do if they are separated from each other?

This is the substance(s) formed in a chemical reaction.