Recent content by jakerue

  1. J

    Place a 3rd charge so net force is 0

    Homework Statement A charge of +2q is placed at the origin and a second charge of -q is placed a x = 3cm. Where can a third charge +Q be placed so that it experiences a zero force? Homework Equations F=kQ1Q2/r^2 The Attempt at a Solution OK I thought I had this until the roots of...
  2. J

    Acceleration down an inclined plane

    Homework Statement A 25-kg box slides, from rest, down a 9.0-m-long incline that makes an angle of 15° with the horizontal. The speed of the box when it reaches the bottom of the incline is 2.4 m/s. (a) What is the coefficient of kinetic friction between the box and the surface of the...
  3. J

    Error propagation in calculations

    OK I can see the error being at 1% for both minutes and hours. So converting 120.0min +0.1min using the 0.0167 hrs/min conversion coefficient will give me 2.000 hours +0.002hrs. I was doing velocity by rise/run from two points (does it matter which two I choose since it won't be the actual...
  4. J

    Error propagation in calculations

    Thanks for the reply Delphi51. The only errors given in the question are with the minutes (+0.1 min) and with the distance (+0.1 km). The question asks to convert minutes to hours and then graph distance over time. I then use the km/h to calculate average velocity and best fit line...
  5. J

    Error propagation in calculations

    This is an issue I am running into at the beginning of my physics course. Homework Statement Given distance and time in minutes, calculate the time in hours (part of a larger average velocity question) and graph over 170minutes. Include error bars in the graph Homework Equations...
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