Question

The bat emits a sound wave with a frequency of 25.0 kHz and a wavelength of 0.0136

metres.
Calculate the speed of this sound wave.​

Answer 1

The calculation that you then need to do is 25000 x 0.0136 = 340. You must not forget the units of speed, which here are metres per second, or m/s. Your final answer is 340 m/s.