{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

First Midterm with Solutions

# First Midterm with Solutions - 1 F irst M idterm P HYI32...

This preview shows pages 1–2. Sign up to view the full content.

1 First Midterm PHYI32, Oct. 8,2010 PRINT yom name and indicate yom recitation section (M, W or TH):~/.<I? / ~ / / 6.' /"/1 ~ '£"""--7_/"/",v"/ '/r-;i 1 .' Prob.l Prob.2 Prob. 3 Total Express your solution through formulas; explain the logic of what you do, and substitute numbers, if required, only at the end. We will take points off if you do not show your solution in terms of formulas before showing your calculations, Points will be also taken off for excessive or insufficient precision and for the absent or wrong units at the ends of calculations. Problem 1: Calculating potential and field from a continuous charge distribution [35 points] Electric charge Q is uniformly distributed over a straight line extending from zero to d on the x- axis: ~~ c\ -+}Z:: .. :::.--------- (-- ~', oAdtr- 0 \p ~~illR1&Wf;¥ttjHW~Iitt~MMtWl1:~;, .) X 1 ' ' qtL : p I I I V d .... - - - - - - - - - - - - - - - - - ..... - - - - - - - - - - - - - - - - .-' I I ~ a). Prove that electric potential V p at a point P on an x axis is given by Vp (p) = KQ In(1 +!! .... ) d P where p is the distance from the end of the charged line to point P [You will need to set up and evaluate an integral over infinitesimal contributions dV p from intervals of lengths dx of the charged line. Show all your work

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

### What students are saying

• 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.

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

• 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.

Dana University of Pennsylvania ‘17, Course Hero Intern

• 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.

Jill Tulane University ‘16, Course Hero Intern