A water bug on the surface of a pond bobs up and down three times per second on ripples with wavelength 10.5 cm.A fish resting at the surface of the pond is 8.50 m from the water bug.How long does it take a ripple passing the water bug to reach the fish?
A)27.0 s
B)243 s
C)81.0 s
D)0.893 s

Question

Quizplus · Accepted Answer

The speed of the ripple can be calculated using the formula: speed = frequency × wavelength. The frequency is 3 Hz and the wavelength is 10.5 cm (0.105 m). So, speed = 3 × 0.105 = 0.315 m/s. The time taken for the ripple to travel 8.50 m is distance/speed = 8.50/0.315 = 27.0 s.

A Water Bug on the Surface of a Pond Bobs