- ALoud
- BModerate
- CFaint
- DShrill
Explanation:
Amplitude is the magnitude of the sound produced. Therefore, if the magnitude of amplitude is small then the sound produced is faint, or if the amplitude is high then the sound produced is loud.
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The density of water is 1000kg/m3 and the density of copper is 8900kg/m3. Which of the following statements is incorrect?
$=\frac{\text{The density of a certain volume of copper}}{\text{The density of the same volume of water}}=8.9$
$=\frac{\text{The volume of a certain mass of copper}}{\text{The volume of the same mass of water}}=8.9$
$=\frac{\text{The weight of a certain volume of copper}}{\text{The weight of the same volume of water}}=8.9$
$=\frac{\text{The mass of a certain volume of copper}}{\text{The mass of the same volume of water}}=8.9$