The initial momentum before the collision of the first ball is 10 kg*m/s. The initial momentum before the collision of the second ball is negative 13 kg*m/s. The final momentum after the collision of the first ball is negative 8 kg*m/s. What is the final momentum after the collision of the second ball?

What are the factors that affect the resistance of a wire?

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.

What is the coefficient of kinetic friction μk between the block and the tabletop?