A periodic water wave travels from region B into region C

PHYSICS · Subjective · A Level · Physics · Waves · Waves

Problem

A periodic water wave travels from region B into region C. In region B the speed of the wave is

1.2\,\text{m/s}

. An observer in region B counts 20 wave crests passing by in

8.0\,\text{s}

. After crossing into region C, the speed of the wave increases to

2.0\,\text{m/s}

. Determine the wavelength of the wave in region C.