Recent content by abm77

How would vector addition work for this question as there are no values for the variables?

So would the equation for three charges just include a q3 at the end? Thus making the small positive test charge 8Q to have it equal zero?

Homework Statement A positive charge Q is fixed to the origin. A negative charge with magnitude 9Q is fixed along the positive x-axis a distance d to the right of the origin. Determine a point where a small positive test charge q will experience zero electrical force from the two charges, or...

Fixed formatting problem

Homework Statement An alpha particle has a charge of 2e and is fixed at the origin. A proton is located 2.00x10^-8 m from the alpha particle along the x-axis. When the proton is released, what is its speed at a great distance from the alpha particle q = 2e r = 2.00x10^-8 v = ? Homework...

Awesome thanks. One last thing, is there a rule for determining which way the electric field vector is going? Like will it be towards 1 (-q) or 4 (+q)?

Right. So I found the length to the centre from each corner to be 0.127m. So if I were to add them as vectors would charge 2 and 3 cancel each other out, and I would be left to add charges 1 and 4 together since they are opposite charges?

Updated my solution to show my full work.

Homework Statement Four charges equal in magnitude of 20.0 microC are placed on the four corners of a square with side length 0.180m. Determine the electric field at the centre of the square. (-q) ---------- (+q) l l l l l...

Thank you both, I get it now and completed the question. Don't know why it took me so long to understand, but I get it now.

I see that for the third equation that the extra unknown would be sinΘm, but I don't see how I can find that unknown value without knowing m, which is what I need to find anyways. Edit: Maybe I'm missing something very obvious because I'm tired...

See that is what I would normally try and do to solve a question I'm struggling with, but let's just say my teacher isn't the best and is rushing through the unit and hasn't even showed us what everything is suppose to look like and has just thrown numbers and equations at us. Very frustrating...

Homework Statement Two slits are separated by a distance of 4.40x10-6m and illuminated with two monochromatic light sources with wave lengths of 600nm (red) and 400nm (violet). The mr bright fringe of the red light coincides with the mv bright fringe of the violet light. What are the lowest...