Jack and Jill go for a walk along an abandoned railroad track. Jackputs one ear next to
Chapter 6, Problem Challenges 3(choose chapter or problem)
Jack and Jill go for a walk along an abandoned railroad track. Jackputs one ear next to a rail, while Jill, 200 m away, taps on the railwith a stone (see Figure 6.55). How much sooner does Jack hearthe sound through the steel rail than through the air?
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