Recent content by RunsWithKnives

  1. R

    Magnetic Force on a Particle at Zero Velocity

    it was a trick question... I am soo angry right now... there is no magnetic force unless the particle has a velocity... AHHHHHHHHHHHHHHHHHHH :cry: the answer is zero!
  2. R

    Magnetic Force on a Particle at Zero Velocity

    stupid mistake ... changes my answer to 7.299e-23 N... which still isn't right... any other ideas ?? :confused: edit: I'm guessing that I'm missing something obvious... I'm supposed to do this using vectors since F = q VxB ... right?? this was how I did the first part... I'll try again in...
  3. R

    Magnetic Force on a Particle at Zero Velocity

    ok I'm stuck here... At a particular point in time, an electron is moving with a velocity of v=(2.0*10^6 m/s)i + (3.0*10^6 m/s)j in a constant magnetic field with strength e=(0.030T)i - (0.15T)j What is the magnitude of the magnetic force on the electron at that moment? this i found...
  4. R

    What is the acceleration of a simple pendulum at the lowest point of its swing?

    I was getting the right answer all along.. I actually did the problem right myself before I started searching for help... I didn't notice that it was asking for the answer in cm.. sorry guys.. thanks for the help...
  5. R

    What is the acceleration of a simple pendulum at the lowest point of its swing?

    This doesn't work.. I have a similar problem to work on.. I figured out my h by using trig, and even verified it by testing it in AutoCad... I also triple checked my units... i put it into gh*2=v^2 and then took my v^2 and put it into a=v^2/2 and I'm still getting a wrong answer... the...
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