Recent content by Jack_M

  1. J

    What is the magnetic-field energy in a given volume with B = 3.50T?

    Oh I see now. I should multiply by the volume of the space correct?
  2. J

    What is the magnetic-field energy in a given volume with B = 3.50T?

    Should an answer using that formula along with those units be correct, though? I only have 2 more submissions available.
  3. J

    What is the magnetic-field energy in a given volume with B = 3.50T?

    Homework Statement What is the magnetic-field energy in a 10.0cm3 volume of space where B = 3.50T? Homework Equations u = B2/2μ0 The Attempt at a Solution Using the equation I got an answer of 4.87*105 J/m3 which is incorrect
  4. J

    Vector Addition Problem - Statics

    That's reassuring. Thanks for checking!
  5. J

    Vector Addition Problem - Statics

    QD, I would've much rather have done it using component method, however my professor would take off points. BvU, are you referring to the 29.67N as being the correct magnitude for Fr and 19.12 degrees being incorrect? Could it be 19.12 degrees from the vertical?
  6. J

    Vector Addition Problem - Statics

    Homework Statement Find the magnitude and direction of the resultant force Fr=F1+F2+F3 by first finding F'=F1+F2 then Fr=F'+F3 known values are in the link Homework Equations Basic vector addition. Law of cosines. Law of sines. The Attempt at a Solution Here's my attempt. I'm not convinced by...