Answer
1 m. 1 cm.
Work Step by Step
a. The wave speed is frequency multiplied by wavelength.
$$v = f \lambda$$
Solve for the wavelength.
Wavelength = speed/frequency =$\frac{v}{f} = \frac{340 m/s}{340 Hz} = 1 m$.
b. Wavelength = speed/frequency =$\frac{v}{f} = \frac{340 m/s}{34000 Hz} = 1 cm$.
