Final answer:
The frequency of a wave with a speed of 30cm/sec and a wavelength of 10cm is calculated using the wave equation, resulting in a frequency of 3 hertz (Hz).
Step-by-step explanation:
To calculate the frequency of a wave with a speed of 30cm/sec and a wavelength of 10cm, we can use the wave equation which relates wave speed (v), frequency (f), and wavelength (λ): v = fλ. To find the frequency (f), we rearrange the equation to f = v/λ.
Using the provided values, we have:
f = (30 cm/s) / (10 cm)
f = 3 Hz
So, the frequency of the wave is 3 hertz (Hz).