Errors in Unit E, 2/e

NOTE: In all that follows I will use <letter name> to represent a Greek-letter variable, ^ to indicate that the next quantity is superscripted, _ to indicate that the next quantity is subscripted, and boldface to indicate a vector quantity. I will also go against typographical convention and put punctuation outside of quotation marks to make whatever is enclosed in quotes exactly reflect what is (or should be) in the text. 

  • first leaf, Maxwell's equations at the bottom: replace <rho> by q_enc and J by i_enc. (08/14/04)
  • page 3, 2nd to last line in box: change "q_1 and q_2" to "q_1 or q_2") (08/11/06)
  • page 8, ninth line, "electric charge in is the coulomb": delete "in". (08/13/04)
  • page 13, fifth line from bottom: change "electrons created" to "electrons deposited" (8/11/06)
  • page 14, 2nd line of 2nd full paragraph: change "charges created" to "charges liberated" (8/11/06)
  • page 14, 1st line of last paragraph: change "typically generates only a tiny amount of excess charge" to "typically deposits only a tiny amount of excess charge on each rubbing surface" (8/11/06)
  • page 30, example E2.1, line below equation E2.14: the q in the equation should not be squared. (5/29/03)
  • page 33, first line: change "polarized object exerts the external charge" to "polarized object exerts on the external charge. (08/14/04)
  • page 34, second line of Evaluation: change "every bit one side" to "every bit on one side"(08/13/04)
  • page 35, figure E2.7: r_b should be r_Pb, and dL should be dx. (5/29/03)
  • page 36, first step in list of steps: change <theta> to <phi>. (5/29/03)
  • page 37, problem E2B.5, first line: change "figure E2.8" to "figure E2.3". (5/29/03)
  • page 38, problems E2S.5 and E2S.6 should specify that a formula is needed. (5/29/03)
  • page 39, problem E2S.10. The problem was unintentionally worded in an ambiguous way. Imagine that the wire lies along the x axis and that the point P is also on the x axis a distance r from the wire's left end. The wire's left end is at x = 0. The hint refers to a possible change of variables when one does the integral, not necessarily in previous steps (though this is possible also). (5/29/03)
  • page 39, problem E2S.11, equation E2.27 and just above: change r_b to r_Pb. Also, the integrals should have r_Pb^3 in the denominators, not r_Pb^3/2. Finally, the first term on the right side of the second equation should be -x/r_Pb, not -1/r_Pb. (08/13/04)
  • page 39, equation E2.27 and the second line above that equation: replace the b subscript on the r with a Pb subscript (5 places). (5/29/03)
  • page 40, equation E2.29: there should be an e in the denominator. (5/29/03)
  • page 40, figure E2.14: "approximately equal" sign in front of the <theta> closest to the negative charge is not necessary. (5/29/03)
  • page 43, third line below the box: change <phi> to d<phi>. (08/14/04)
  • page 43, last line in the first box: add "in that interval" to the end of the line (8/11/06)
  • page 46, figure E3.1: note that the minus signs in front of the numbers on the right hand side of the diagram are hard to see (8/11/06)
  • page 48, equation E3.14: change the lower limit in the integral from 0 to r_P. (5/29/03)
  • page 53, table E3.1, entries for infinite cylinder and infinite flat surface: insert a minus sign before the right side of the formula for the potential. (5/29/03)
  • page 57, problem E3T.4, last line in first column: change "+/-x direction" to "+x direction"(8/11/06)
  • page 58, problem E3B.3, last line: change "field points" to "field at points". (5/29/03)
  • page 59, equation E3.31: insert a minus sign before the right side. (5/29/03)
  • page 60, problems E3S.9 and E3S.10 really belong in the next chapter, and the surfaces in question should be the surfaces of conducting objects. (5/29/03)
  • page 61, problem numbered E2R.2: should be numbered E3R.2. (5/29/03)
  • page 65, last line of first box: change "positive or" to "positive, or" (5/29/03)
  • page 72, l last line of first box: change "positive or" to "positive, or" (5/29/03)
  • page 73, table E4.1, entry for seawater: delete "x 10^-2" (5/29/03)
  • page 91: change "4H_2O" to "5H_2O" in both equation E5.2a and in figure E5.7 (8/11/06)
  • page 94, last sidebar, second line: change "depends the" to "depends on the". (5/29/03)
  • page 99, problem E5T.1, third line: change "voltage difference" to "potential difference". (5/29/03)
  • page 100, problem E5T.5, third line: change "voltage difference" to "potential difference". (5/29/03)
  • page 100, problem E5T.5: change the last line to "By what factor does the current the wire conducts change?" (08/14/04)
  • page 100, problem E5T.5, answer E: add "(the factor is 1)" for clarity. (5/29/03)
  • page 100, problem E5T.7, first line: wire should have a diameter of 0.6 mm, not nm. (9/21/05)
  • page 101, problem E5S.1, last line: change "E5.7" to "E5.8" (5/29/03, fixed 08/13/04)
  • page 115, third full paragraph, first line: change "that R_1 > R_2" to "that R_2 > R_1". (5/29/03)
  • page 121, last sentence of problem E6B.1: change "voltage" to "potential difference". (08/14/04)
  • page 122, problem E6B.2, fourth line: change "voltage" to "potential". (5/29/03)
  • page 122, problem E6S.1, fourth and fifth lines: change "voltage" to "potential" (2 places). (5/29/03)
  • page 123, problems E6S.5 and E6S.6: problem parts are not indented in the usual way. (5/29/03)
  • page 130, next-to-last line of first paragraph: replace "figure E7.5 (just" with "figure E7.5 (just as". (5/29/03)
  • page 135, equation E7.8: delete vector arrow over the last B-bar symbol. (5/29/03)
  • page 137, figure E7.10 caption: insert "negatively-charged" before "particle". (08/13/04
  • page 140, figure E7.13: all force vectors should have the same length. (5/29/03)
  • page 142, example E7.1, third line: delete the vector arrow above B-bar. (08/14/04)
  • page 142, equation E7.15: delete the vector arrow above B-bar in the rightmost side of the equation. (08/14/04)
  • page 144, problem E7T.12, answer D: replace "clockwise" by "counterclockwise". (08/14/04)
  • page 146, figure E7.17: B should be B-bar. (5/29/03)
  • page 146, problem E7S.6, next-to-last line: delete "charged". (08/13/04)
  • page 147, problem E7S.14, third line, and equation E7.21: change B-bar to B. (5/29/03)
  • page 148, equation E7.23: numerator of right side should be E^2 - m^2c^4. (5/29/03)
  • page 148, second line below equation E7.23: leftmost quantity should be [(pc)^2 + (mc^2)^2]^1/2. (5/29/03)
  • page 149, first line of equation E7.27: rightmost quantity should have an I in the numerator. (5/29/03)
  • page 157, Figure E8.5: either change the charge to negative or reverse the magnetic field vectors. (08/14/04)
  • page 161, example E8.1, second line of Model section: change "the loop." to "point P." (5/29/03)
  • page 167, problem E8S.2, next-to-last line: change "voltage" to "potential". (5/29/03)
  • page 167, problem E8S.3, last line: change +y to -y. (5/29/03)
  • page 167, figure E8.13: draw in an x axis parallel to J, a vertical z axis, and a y axis opposite to B-bar. (08/14/04)
  • page 174, last line: change "distance P from" to "distance that P is from". (5/29/03)
  • page 177, 6th line: change "x coordinate" to "position". (08/13/04)
  • page 177, last line of figure E9.3 caption: change "xy plane" to "yz plane". (08/13/04)
  • page 178, last line before section E9.3: change "magnitude" to "the magnitude". (08/13/04)
  • page 181, ninth line: change "depend" to "depend on". (08/13/04)
  • page 182, example E9.6, fourth line: change -y to +y. (5/29/03)
  • page 185, second entry in table above Exercise E9X.5: change "perpendicular to tile and thus" to "perpendicular to the tile's tile vector and thus"(8/11/06)
  • page 187, figure E9.10: electric field arrows should all have the same length. (5/29/03)
  • page 187, problem E9T.8, fifth line: change 2<pi>kI to 2kI. (5/29/03)
  • page 188, problem E9S.3, last line: change "a cylindrically" to "an infinite cylindrically". (5/29/03)
  • page 189, problem E9S.6, last line of part (a): change "center (the center of the donut hole)" to "central axis". (5/29/03)
  • page 189, problem E9S.7, part (a), second line, and 6th line: change "the flux" to "the magnitude of the flux". (5/29/03)
  • page 189, problem E9S.7, part (a), third line: put absolute value symbols around the quantities on this line (2 places) (5/29/03)
  • page 189, problem E9S.9, 5th line: change 2<pi>kI to 2kI. (5/29/03)
  • page 196, second full paragraph, next-to-last line: change dr to dA. (08/13/04)
  • page 196, second line from the bottom: change "surface element everywhere" to "surface element is everywhere". (08/13/04)
  • page 200, equation E10.8, middle item in the equation after the arrow: change denominator from 2<pi>L to 2<pi>rL. (5/29/03)
  • page 202, Figure E10.5: slab width should be labeled W instead of w to be consistent with the text. (08/13/04)
  • page 207, problem E10T.3, part (c), last line: change "top cap" to "right cap". (5/29/03)
  • page 208, problem E10B.5, last line on page: insert "magnitude of" before "charge". (08/13/04)
  • page 209, equation E10.19, place absolute-value bars around the <sigma>s. (5/29/03)
  • page 227, second paragraph, first line: insert "with a" before "well-defined potential". (08/13/04)
  • page 228, figure E11.11: the colored loops should have counterclockwise circulation vectors drawn. (5/29/03)
  • page 228, figure E11.11b: the set of arrows having the same intermediate distance from point O should all have the same length. (5/29/03)
  • page 229, figure E11.12: delete the vector arrow over the rightmost P. (5/29/03)
  • page 232, problem E11S.6, third line: change "depends on y." to "depends only on y." (5/29/03)
  • page 232, problem E11S.7, second line: change "certain region" to "certain region of empty space". (5/29/03)
  • page 233, problem E11S.9, fifth line from the bottom: change "the magnetic field" to "the electric field". (5/29/03)
  • page 233, problem E11R.4, fourth line: change 100 to 10.
  • page 235, answer to exercise E11X.7, third line and sixth line from the end: change E11.12c to E11.11c. (5/29/03)
  • page 246, figure E12.3: change left hand to a right hand, and reverse the direction of the magnetic field in the bottom diagram. (5/29/03)
  • page 250, problem E12T.2, part (a): change "In the reference frame where charge B is at rest," to "In the lab frame,". (5/29/03)
  • page 251, problem E12T.4, paragraph below problem E12T.4: change "Imagine that in their own rest frames, these objects have uniform charge-per-unit-lengths that are equal in magnitude but opposite in sign." to "Imagine that the core and sheath have charges of opposite sign, but that the absolute value of the core's charge-per-unit-length measured in the core's rest frame is the same as the absolute value of the sheath's charge-per-unit-length measured in the sheath's rest frame." (5/29/03)
  • page 251, problem E12B.3, third line: change "magnitude and" to "magnitude (in newtons per coulomb and tesla) and". Fourth line: change E-prime to B-bar-prime. Sixth line: change "magnetic" to "electric". Seventh line: delete the phrase in parentheses. (5/29/03)
  • page 252, problem E12B.6, part (c): should read "Is there a nonzero electric field in the region between the plates in a frame moving with the upper plate?" (5/29/03)
  • page 253, problem E12S.5: parts are not intented in the usual manner. (5/29/03)
  • page 253, problem E12S.9, part (a), last line before equation E12.26: replace "+z direction" with "<plus-or-minus>z direction". (5/29/03)
  • page 254, problem E12R.1, part (a): change "constant speed" to "constant velocity". (5/29/03)
  • page 254, equation E12.33a: reverse sign of both terms. (08/14/04)
  • page 267, third line: reference should be to E13.21b, not E13.20b. (8/11/06)
  • page 268, line below equation E13.24: reference should be to equation E13.22. (8/11/06)
  • page 272, equation E13.33: dr on left side should be dS (8/11/06)
  • page 273, figure E13.10b: the set of arrows having the same intermediate distance from point O should all have the same length. (5/29/03)
  • page 276, problem E13S.6, fourth line: The x component of E should be nonzero, not the z component. (8/11/06)
  • page 278, problem numbered E13A.3 should be numbered E13A.4. (5/29/03)
  • page 282, exercise E14X.1: move c from right side to left side of equation (8/11/06)
  • page 283, figure E14.2: inner loop should have a small dS vector pointing counterclockwise. (5/29/03)
  • page 287, equation E14.7: there's a factor of k missing from the last term of the equation
  • page 292, line above equation E14.7: change L to L_1. (08/13/04)
  • page 294, problem E14T.2, second line: replace "the current" with "the magnetic field". (5/29/03)
  • page 294, problem E14T.6, answers: replace "induction" with "inductance" (4 places). (5/29/03)
  • page 295, equation E14.30: delete everything before "I(t) =". (5/29/03)
  • page 296, equation E14.32: place the entire left-hand side inside absolute-value bars. (5/29/03)
  • page 296, equation E14.33: the L in the denominator should be squared. (5/29/03)
  • page 296, last line: change "the magnetic force" to "the magnitude of the magnetic force". (5/29/03)
  • page 297, equation E14.34: place the q inside absolute-value bars. (5/29/03)
  • page 297, last line on page: change L (times) R to L (divided by) R. (08/14/04)
  • page 305, caption to figure E15.4: change "5 cm" to "4 cm" and final result from 1.3 cm^-1 to 1.6 cm^-1. (8/11/06)
  • page 306, caption to figure E15.5: change "0.5 s" to "0.4 s" and the final result from 12.6 to 15.7 radians per second (8/11/06)
  • page 316: problem numbered E15.6 should be numbered E15T.6. (5/29/03)
  • page 316, problem E15B.2, second line: insert "(Assume that electromagnetic waves move at speed c.)" after the question mark. (5/29/03)
  • page 318, third line before "Rich-Context": change "consider <delta>x" with "consider the <delta>x". (5/29/03, fixed 08/13/04)
  • page 318, last line before "Rich-Context": change "per unit length" to "per unit spine length". (5/29/03, fixed 08/13/04)
  • page 335, problem E16T.4, answers A, B, and C: change x to z in the argument of the sine. (5/29/03)
  • page 335, problem E16T.9, second line: change "1 ps" to "10 ps" (makes answer less ambiguous). (5/29/03)
  • page 336, problem E16B.4, part (a). Delete the hint. (5/29/03)
  • page 336, problem E16S.2, fourth line from top of right column: change "the first along" to "the first step along". (5/29/03)
  • page 337, problem E16R.2, third line: change "10 cm" to "20 cm". Last line: change "increased to 20 cm" to "decreased to 10 cm".
  • page 337, problem E16A.1, second line: place absolute-value bars around I(t) and sin<omega>t. (5/29/03)
  • inside of back cover, symbol <gamma>: change "[1-<beta>^2]^1/2" to "[1-<beta>^2]^-1/2". (5/29/03)

5/29/03: Thanks to David Tanenbaum, Jonathan Mitschele, and especially Michael Burns-Kaurin and his sharp-eyed physics students for finding many of the errors posted on this date.

08/13/04: Thanks to Vic DeCarlo, Bret Crawford, and Kara Beauchamp for errors posted on this date.

08/11/06: Thanks to Tom Bernatowicz and Joseph Marusa for errors posted on this date.

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