A sinusoidal wave traveling on a string with a tension of 16 N has a period of 0.25 s, a wavelength of 40 cm, and an amplitude of 8 cm. The speed of the wave is
(a) 10 cm/s
(b) 160 cm/s
(c) 2 cm/s
(d) 32 cm/s
(e) 1 cm/s
(f) 16 cm/s
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