In: Physics
Select all true statements.
The threshold of human hearing is defined as having an intensity of exactly one W/m2. |
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Sound is a longitudinal wave in air. |
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Sound waves travel faster through gases than through solids. |
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The sound of a horn approaching a stationary observer will have higher frequency than the frequency of the horn at rest. |
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All other variables being equal, the speed of sound in air decreases as the air temperature becomes colder. |