# Physlet® Physics Errata Site

ALL OF THESE ERRORS HAVE BEEN FIXED AS OF THE SECOND PRINTING

#### ______________________________________________________________________________ 312 pages have minor narrative changes to match the book narrative (CD changes only) 6 pages have minor script changes (CD changes only) 5 changes necessitate book narrative changes (CD and book narrative) ______________________________________________________________________________

Illustration 3.1
original loading script fixed: flip of x and y in the table

Exploration 6.2
script fixed so that units in the table for velocity should be (m/s)

Exploration 6.3
book text needs changing script fix so labels in “work” graph so graph is correct.
change last sentence of first paragraph to: Also shown are the graphs of force cos(θy) vs. positiony and kinetic energy vs. positiony where θy is the angle between the gravitational force and the ball's infinitesimal y displacement.

Problem 14.10
script fixed so blocks should only move when fluid level drops below their tops

Exploration 17.3 (book text needs changing)
add to end of last sentence of the second paragraph: “in the y direction only.”
also minor script change to better time the reflection.

Illustration 24.1, Illustration 24.2, Illustration 24.3
script fixed so that mouse down drag shows coordinates

Problem 24.3, Problem 24.4, Problem 25.4
script fixed so that mouse down drag shows coordinates

Illustration 26.3 (book text needs changing)
add to end of first paragraph
A dragable dielectric is outside the plates (drag at the center of the dielectric) and the dielectric has a thickness that is smaller than the separation between the capacitor plates.

Note: if the dielectric had a thickness equal to that of the separation between the capacitor plates, the electric field would not have changed. This is due to the fact that while the charge on the plates has changed, the separation between the plates and the electric potential difference between the plates is the same whether there is a dielectric there or not.

Illustration 26.4 (book text needs changing)
Finally, consider two different capacitors connected in series. As in the series case with the battery, both capacitors contain the same charge. Which one has the greater potential difference across it? Since ΔV = Q/C, the capacitor on the left (with the larger capacitance) has the smaller electric potential difference across it.

Illustration 27.1, Illustration 27.2
fixed to match book text, old sentence in either first or second paragraph removed and replaced with the sentence: “A compass utilizes a small permanent magnet; its arrow points toward the north pole of its magnet.”

Exploration 31.2 (book text needs changing)