**(a)**

Distance, speed, and time raltionship:

$\overline{){\mathbf{v}}{\mathbf{=}}\frac{\mathbf{d}}{\mathbf{t}}}$

d = 2L = 2(4m) = 8m

t = 2.4 s

A wave traveling on a Slinky® that is stretched to 4 m takes 2.4 s to travel the length of the Slinky and back again.

(a) What is the speed of the wave?

(b) Using the same Slinky stretched to the same length, a standing wave is created which consists of three antinodes and four nodes. At what frequency must the Slinky be oscillating?

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What scientific concept do you need to know in order to solve this problem?

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