Question

The amplitude of vibration of a monarch butterfly's wings is 1.5 cm. If the frequency of vibration of the wings is 9.0 Hz, through what distance, in metres, do the wing tips travel in 1.0 min? [1A, 4T]

Answer 1

$$D=2\pi A tf\\ D=2\pi (0.015)(60)(9)=51\ m$$