Ineed , . while skiing, sam flies down a hill and hits a jump. he has a mass of 75 kg, and he leaves the jump at 18 m/s. what is his momentum as he leaves the jump? show your work . ~

Point charges q1=+2.00μc and q2=−2.00μc are placed at adjacent corners of a square for which the length of each side is 1.50 cm . point a is at the center of the square, and point b is at the empty corner closest to q2. take the electric potential to be zero at a distance far from both charges. part a what is the electric potential at point a due to q1 and q2? express your answer with the appropriate units.