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In: Physics

Select all true statements. The threshold of human hearing is defined as having an intensity of...

Select all true statements.

The threshold of human hearing is defined as having an intensity of exactly one W/m2.

Sound is a longitudinal wave in air.

Sound waves travel faster through gases than through solids.

The sound of a horn approaching a stationary observer will have higher frequency than the frequency of the horn at rest.   

All other variables being equal, the speed of sound in air decreases as the air temperature becomes colder.

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