(Solved): A steel wire is used to stretch a spring. An oscillating magnetic field drives the steel wire back ...

A steel wire is used to stretch a spring. An oscillating magnetic field drives the steel wire back and forth. \( \mathrm{A} \) standing wave with three antinodes is created when the spring is stretched \( 8.70 \mathrm{~cm} \). (Figure 1) Figure 1 of 1 What stretch of the spring produces a standing wave with two antinodes? Express your answer with the appropriate units.