5. Cicadas produce a buzzing sound that has a wavelength in air of 2.69 m If the speed of sound in air is
346 m/s. what is the frequency of the sound produced by a cicada? What is its period

When seismic waves hit a fault, the waves are reflected off the fault. seismograph can detect these reflected seismic waves. geologists then use these data to map the fault's length and depth

Thick and thin filaments

Ithink that it is b am i correct