Recent content by desparate

yes its from this book, i really don't know why we are doing this kind of physics I am not studying physics or something like that can you please draw something? i m not good at english, and i can't really understand what you mean by saying "the field at P due to the charge between θ and θ +...

doesnt it say P? (ie, P)? so i think it has to be P

can you tell me what the direction of the electric field is in P?

http://img194.imageshack.us/img194/1559/45954311.png Positive electric charge Q, total, are distributed uniformly on a semicircle with radius a. What is the electric field (in moderation and direction) in the center curvature (ie, point P)? please help me, its the last i have to solve in...