Recent content by mirs

  1. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    That answers my question actually, sorry I was unclear. Thank you for your help!
  2. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    Thank you! One last question -- if the uncertainty for measuring the diameter is ± 0.00001 m, how would that change in the inverse square of the diameter? I would think to convert the absolute uncertainty to a relative uncertainty; i.e. 0.0008 ± 0.00001 m would be 0.0008 m ± 1.25 %, and then...
  3. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    Considering the diameter is measured to 2 sig figs, the slope should have 2 as well, right?
  4. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    EDIT -- Wait, the slope does not give me p! I need to solve for p, since that is 4pL/pi and sub in the given value for L. Oops.
  5. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    OK, will do, thank you. I am now comparing my experimental value with the theoretical value. The slope is 2x10^-5, so I worked out the following: |[(1.18 x 10^-6 ohm*m) - (2 x 10^-5 ohm*m)]/(1.18 x 10^-6 ohm*m)| x 100 = 1595 % That is huge! I worked it out a couple of times and I can't seem to...
  6. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    I don't think we are required to add error bars but is it better to include them? Thanks again! :smile:
  7. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    Perfect. Thank you for all your help!
  8. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    That looks more like it... thank you so much for your help!
  9. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    Sorry, you're right, it is over 4, not *4
  10. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    Basically my graph is throwing me off since it's not linear. Would it be incorrect if I take the most linear portion of the graph and calculate the slope manually from there, instead of adding a trendline and having excel do it?
  11. M

    Lab: Plot graph of resistance, R (in Ohms) versus 1/d^2

    Homework Statement We were given five samples of nichrome wire, each with a different diameter but the same length. A micrometer was used to measure the diameters. We then measured and recorded the electrical resistance, R in Ohms of each nichrome sample with a DMM. I will try to summarize all...
  12. M

    Application of derivatives problem?

    OK, so I'm guessing I don't plug t into the energy equation in the first place? because I did that and found the derivative to be 5ktv^4
  13. M

    Application of derivatives problem?

    Yes! I meant (kdv^5)/(v−v0).
  14. M

    Application of derivatives problem?

    Homework Statement A biologist determines experimentally that the number of calories burned by a salmon swimming a distance d in miles upstream against a current v0 in miles per hour is given by Energy = kdv^5/v − v0 where v is the salmon’s swimming speed relative to the water it is in...
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