problem21_93

University Physics with Modern Physics with Mastering Physics (11th Edition)

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
21.93: a) The y -components of the electric field cancel, and the x -components from both charges, as given in problem 21.87 is: . ˆ ) ( 1 1 2 4 1 ) ( 1 1 2 4 1 2 1 2 2 0 2 1 2 2 0 i F + - - = + - - = a y y a Qq πε a y y a Q πε E x If . 4 1 ˆ )) 2 1 ( 1 ( 2 4 1 , 3 0 2 2 0 y Qqa πε y a ay Qq πε a y - = + - - - i F b) If the point charge is now on the x -axis the two charged parts of the rods provide different forces, though still along the x -axis (see problem 21.86 ). i E F i E F ˆ 1 1 4 1 and ˆ 1 1 4 1 0 0 + - - = = - - = = - - + + a
Background image of page 1
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: x x a Qq q x a x a Qq q So, i F F F 1 2 1 4 1 + +--= + =-+ a x x a x a Qq For . 2 4 1 . . . 1 2 . . . 1 4 1 , 3 2 2 2 2 i i F x Qqa x a x a x a x a ax Qq a x = -+-+- + + +...
View Full Document

This document was uploaded on 02/06/2008.

Ask a homework question - tutors are online