A
AngiePants
Guest
Three charge has the values and coordinates: q1= 24.5uC (4.40m, 6.02m) q2= -11.2uC (-4.50m, 6.75m) and q3= ?uC (2.23m, -3.01m).
The electric potential at the origin is 0V. What is q3?
I used pythagorans theory to find each distance from origin (I am assuming origin is (0,0) and found X1=7.46 m, x2=8.11m and x3=3.76m
Then I used V=kq/r to find V. V1=2.95*10^4 V2=-1.24*10^4 V3=?
I set Vnet to 0 and brought V1+V2 over to left side of equation. That gave me V3= -1.71810^4V and I multiplied that by x3 and divided by k and get q3=-7.15uC....
the answer is supposed to be -12uc
Where did I go wrong?
I think it has something to do with finding vector of charge? Can you show me how to do this?
The electric potential at the origin is 0V. What is q3?
I used pythagorans theory to find each distance from origin (I am assuming origin is (0,0) and found X1=7.46 m, x2=8.11m and x3=3.76m
Then I used V=kq/r to find V. V1=2.95*10^4 V2=-1.24*10^4 V3=?
I set Vnet to 0 and brought V1+V2 over to left side of equation. That gave me V3= -1.71810^4V and I multiplied that by x3 and divided by k and get q3=-7.15uC....
the answer is supposed to be -12uc
Where did I go wrong?
I think it has something to do with finding vector of charge? Can you show me how to do this?