A student investigates waves on a stretched cord. The frequency is 25 Hz. Three complete wavelengths occupy 1.20 m of the cord. What time does a wave take to travel 5.0 m?
0.17 s0.17\ \mathrm{s}0.17 s
1.50 s1.50\ \mathrm{s}1.50 s
2.00 s2.00\ \mathrm{s}2.00 s
0.50 s0.50\ \mathrm{s}0.50 s