Because of how the scale was set up it was difficult

This preview shows page 8 - 9 out of 9 pages.

distance from equilibrium. Because of how the scale was set up, it was difficult to obtain accurate readings of the distance of the balls, due to a slight amount of parallax between one position and another. Although a gridline was extremely helpful in decreasing these errors, we cannot completely discount these errors. However, we may put an upper bound on these errors of approximately half a radius of the balls, on both ends. In addition, our maximum precision was, realistically, on the order of .1cm due to a combination of difficulties in measuring and the inherent nature of the scale. If we take Δ r ≤ k 1 . 1 cm k , then we get a maximum error, due to these parallax and rounding errors, of approximately ln(1 ± 1 . 21 r ) on the log scale, a not 8
Image of page 8

Subscribe to view the full document.

insignificant number, considering that each data point may be off by this amount in either direction. However, at the same time, this accounts for much of the deviation from our expected values of -2 and 1, for r and q 1 , respectively. 5 Conclusion Based on our numerical data and statistical analysis, we conclude that we cannot reject the null hypothesis, that F e q 1 q 2 r 2 , as Coulomb’s Law states. Although there is a fair amount of noise in our data, it is not sufficient to demonstrate that there is noticeable bias away from Coulomb’s Law. However, there is a great deal of noise in the data, mostly due to environmental effects, indicating the effects of the surroundings on charge, implying that the conditions under which any experiments are done should be noted and compensated for, lest errors become significant. Also, if performing charge experiments, people should not breathe too much. ‘ 9
Image of page 9
  • Winter '13
  • MarceloGleiser
  • Physics, Charge, Force, Electric charge, Equilibrium point, electrical force, Coulomb’s law, gravitational restoring force

{[ snackBarMessage ]}

Get FREE access by uploading your study materials

Upload your study materials now and get free access to over 25 million documents.

Upload now for FREE access Or pay now for instant access
Christopher Reinemann
"Before using Course Hero my grade was at 78%. By the end of the semester my grade was at 90%. I could not have done it without all the class material I found."
— Christopher R., University of Rhode Island '15, Course Hero Intern

Ask a question for free

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern