Added topic tags to some Y&F-12 problems

[course.git] / latex / problems / Young_and_Freedman_12 / problem28.62.tex

diff --git a/latex/problems/Young_and_Freedman_12/problem28.62.tex b/latex/problems/Young_and_Freedman_12/problem28.62.tex
index 4ad478996c88d13713ddd4d4001b9ebd93c4ab84..76f366c2877bef7d3acfa5a1fdb50cdd10e550a9 100644 (file)
--- a/latex/problems/Young_and_Freedman_12/problem28.62.tex
+++ b/latex/problems/Young_and_Freedman_12/problem28.62.tex
@@ -1,4 +1,4 @@
-\begin{problem*}{28.62}
+\begin{problem*}{28.62} % magnetic force on wires, magnetic field from wires
 A pair of long, rigid metal rods, each of length $L$, lie parallel to
 each other on a perfectly smooth table.  Their ends are connected by
 identical, very light conducting springs of force constant $k$