2. a 4.5 kg model rocket is launched, expelling 152 grams of burned fuel from its exhaust at a speed of
786 m/s. what is the speed of the rocket after the fuel has burned? ignore the forces of gravity and air
resistance.

Along the line connecting the two charges, at what distance from the charge q1 is the total electric field from the two charges zero? express your answer in terms of some or all of the variables s, q1, q2 and k =14ï€ïµ0. if your answer is difficult to enter, consider simplifying it, as it can be made relatively simple with some work.