Recent content by harshey

yup. no problem.

I may be wrong here, someone correct me if I am. I think since s(t) is the position of the car, simply differentiating the equation will give you the v(t), velocity of the car with respect to time. Thus, v(t) = 25-10.5t I'm not sure how the answer is v(t) = 25-11t Maybe the original problem...

Homework Statement A segment of interstate highwya under consideration lies in a vertical plane. A segment with a grade of -5% is to be joined smoothly to a segment with a grade of 3%. The vetical parabolic curve which will accomplish this transition is to begin at a point with elevation...

Is the electrostatic self-energy the potential? What is phi in your equation? Sorry, I am confused in how you derived that equation.

The course is Engineering Physics II at Saint Louis University in St. Louis MO. The text is "Physics" Volume 2 by Halliday, Resnick and Krane. Our professor doesn't use the text though, he teaches from his own notes which I believe are a few millennium old. Thanks for the help I'll work on...

Homework Statement Find an expression for the electrostatic self-energy of an arbitrary spherically symmetric charge density distribution p(r). You may not assume that p(r) represents any point charge, or that it is constant, or that it is piecewise constant, or that it does or does not cut...

Find an expression for the electrostatic self-energy of an arbitrary spherically symmetric charge density distribution p(r). You may not assume that p(r) represents any point charge, or that it is constant, or that it is piecewise constant, or that it does or does not cut off at any finite...