Kaplan 10th Edition DT Q43

Kaplan's Book

43) This question simply asks us to find the speed of the standing wave. There is a simple formula for waves to help us find the wave's speed.

Where v is speed, f is frequency, and lamda is wavelength

This formula shows us the direct relation between speed and frequency/wavelength. Finally, we can plug in values to solve for the speed.

Where v is speed, f is frequency, and lamda is wavelength

Answer: C