Two periodic waves travel along identical strings with the same wave speed of 4.0 m/s.
• Wave P: amplitude = 0.40 cm, wavelength = 0.80 m
• Wave Q: amplitude = 0.80 cm, wavelength = 0.40 m
Which statement correctly describes the relative energy each wave transports and the pitch that would be perceived if the waves were sound?
(a) Both waves transport the same energy because they travel at the same speed; however, Wave Q would be perceived as higher in pitch.
(b) Wave Q transports more energy and would be perceived as higher in pitch than Wave P.
(c) Wave Q transports more energy but would be perceived as lower in pitch than Wave P because of its larger amplitude.
(d) Wave P transports more energy because of its longer wavelength, and both waves would be perceived with the same pitch.