Recent content by cactusblanket

  1. cactusblanket

    Two Electric Dipoles-Net Charge of Zero

    With regard to showing my work, I used Coulomb's Law and inserted a net charge of zero which yields: Force = zero. Would it be correct to state that the net force between electric dipoles is zero, but since they are polarized, (the positive and negative charges redistributing themselves to a...
  2. cactusblanket

    Two Electric Dipoles-Net Charge of Zero

    Hi there, Can someone help out with this problem? Thank you.:redface: Homework Statement Consider two electric dipoles in empty space. The net charge of each dipole is zero, so does an electric force exist between them? Homework Equations F=kq1q2/r2 The Attempt at a Solution...
  3. cactusblanket

    Acceleration of a Charged Particle in 3D Vector Notation

    Okay, I've been working on it and here is what I have been able to do: Step 1 F⃗13 = (-35.9i, -53.9j, -35.9k) N Step 2 F⃗ 23 = (-72.1i, 24.0j, 48.1k) N Step 3 Add vectorially= (-108.0i, -29.8j, 12.1k) N Step 4 F⃗=ma yields (-17,999i, -4974j, 2024k) m/s2
  4. cactusblanket

    Acceleration of a Charged Particle in 3D Vector Notation

    Hi Vela, I see you are online now. Can you continue this thread?
  5. cactusblanket

    Acceleration of a Charged Particle in 3D Vector Notation

    OK, so the answer (2, 1) gives the direction only. Magnitude is √5. It is 11:15 pm, time to put the kids to sleep and go to bed here in Nova Scotia. Looking forward to replying to your next prompt and resuming the thread if you are willing and able. Hope I don't appear TOO dumb! Thanks...
  6. cactusblanket

    Acceleration of a Charged Particle in 3D Vector Notation

    Sorry, but that is how I learned to add vectors. I cannot seem to understand the right question. What is the right question?
  7. cactusblanket

    Acceleration of a Charged Particle in 3D Vector Notation

    I drew it tip to tail. Yes, (2, 1) is correct.
  8. cactusblanket

    Acceleration of a Charged Particle in 3D Vector Notation

    Actually, I thought that I added the vectors correctly: The vector points (0, 0, 0) and (2, 3, 2) give (2, 3, 2). The vector points (-1, 4, 4) and (2, 3, 2) give (1, 7, 6). To find their magnitude I performed √(22 + 32+ 22)2 and √(12 + 72+ 72)2. I used those as my denominators and I get...
  9. cactusblanket

    Acceleration of a Charged Particle in 3D Vector Notation

    Hi, Actually, I did use different denominators. Your advice to try to figure out what r⃗ 31 and r⃗ 32 is spot on. Indeed that is my first road block (I wasn't able to clarify that in my original post.) I don't know how to calculate that. Can you please recommend how I go about solving for r⃗...
  10. cactusblanket

    Acceleration of a Charged Particle in 3D Vector Notation

    Homework Statement Hi there! Here is a problem from our 1st year course. We have covered the basics on charges and Coulomb's Law. However our prof said he designed the following question to be "deliberately obscure"! Two charges of 4.00μC are fixed in space, Q1 at (0,0,0) and Q2 at...