The speed of sound in air depends on which physical properties of the medium?

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1. The speed of sound in air depends on which physical properties of the medium?

Its elastic property alone, not its inertia (density)

Its inertia (density) alone, not its elastic property

Neither its elastic property nor its inertia

Both its elastic property and its inertia together

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Sound speed in a medium depends on both the medium’s elasticity, which provides the restoring force, and its inertia, or density, which resists that force.