What Is the Intensity of a Sound with a Measured

question 9

Multiple Choice

What is the intensity of a sound with a measured intensity level of 84 dB? (I₀ = 10^-12 W/m²)

• A)8.4 x 10^-3 W/m²
• B)2.5 x 10^-4 W/m²
• C)1.2 x 10^-5 W/m²
• D)7.4 x 10^-4 W/m²

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Definitions:

Optimal Number

The most favorable quantity that achieves the best outcome under specific conditions.

Individual Marginal Benefit

The additional benefit received by an individual from consuming one more unit of a good or service.

Traffic Lights

Traffic lights are signaling devices positioned at road intersections and pedestrian crossings to control the flow of traffic, using a universal color code to signal stop, go, and caution.

Socially Efficient

A situation in which resources are allocated in the most beneficial way from the perspective of society as a whole, considering both private and external costs and benefits.