If two sounds have the same frequency but different amplitudes, what will be different?
Their loudness will be different
The pitch of a sound is decided by its frequency, so two sounds of the same frequency have the same pitch.
The loudness of a sound depends on the amplitude of the wave - the larger the amplitude, the greater the energy carried and the louder the sound.
Speed depends on the medium, not on amplitude, and direction is unrelated to it.
Hence, the answer is that their loudness will be different.
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