If you want to change the pitch of a sound, you have to change the question 7 options: volume speed amplitude frequency

If you want to change the pitch of a sound, you have to change the frequency.

Explanation:

Pitch is the quality of the sound to judge it has higher or lower.The frequency of the sound wave is perceived as pitch.Pitch and frequency of the sound are related to each other

If you want to change the pitch of a sound, you have to change the frequency.

since the atomic number is the number of protons in the nucleus, as we move to the left on the periodic table, the electrostatic pull between the nucleus and the valence electron shell decreases. as we move down a group (vertical column), the valence shell energy level gets further and further from the nucleus.

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