Question

a student is using a sound machine to produce the sound waves presented in the table provided. which sound wave has the most energy? a sound wave #2 because it has a lower pitch. b sound wave #1 because it has a louder volume. c sound wave #1 because it has a higher pitch. d sound wave #2 because it has a louder volume.

sound wave	wavelength	frequency	amplitude
sound wave #2	2.5 m	140 hz	50 db

Explanation:

Step1: Understand sound - wave energy factors

The energy of a sound - wave is related to its amplitude (loudness) and frequency (pitch). Higher amplitude and higher frequency mean more energy.

Step2: Compare amplitudes

Both sound wave #1 and sound wave #2 have an amplitude of 50 dB, so amplitude does not differentiate their energy in this case.

Step3: Compare frequencies

Sound wave #1 has a frequency of 230 Hz and sound wave #2 has a frequency of 140 Hz. Since 230 Hz>140 Hz, sound wave #1 has a higher frequency. A higher - frequency sound wave has more energy when the amplitudes are the same.

Answer:

C. Sound wave #1 because it has a higher pitch