Recent content by Dayton

Thanks Ok, I thought that that reasoning was correct. My professor replied with this when I emailed to ask if my car analogy was correct: I just want to be sure if my logic was correct before I ask him about it again.

Homework Statement This problem is from a homework assignment. The professor says that the the ping-pong ball will go up if the cd = 0 and will go down if the cd is much larger than one. Is this logic correct? I keep thinking about how if an aerodynamic car is pushed by wind, the car...

I got the answer, guys. Thanks for leading me in the right direction.

Okay, so I set up the following equation: r1=6m-r2 Q1/(6m-r2)^2 = Q2/(R2^2) Q1 (R2)^2 = Q2 (6m-R2)^2 0 = 36*Q2 -Q2*2R2+Q2*(R2)^2 -Q1*(R2)^2 Every time I try to solve using the quadratic, I end up getting a negative number under the radical. What am I doing wrong? Any help would be...

Homework Statement A one point charge of -12µC is located at x=0m and a second point charge of -24µC is located at x=6m. Calculate the point where the electric field would be zero. I think that my physics professor worded this question wrong. Is there a point where the field would be zero if...