During a typical workday (eight hours), the average sound intensity arriving at Larry's ear is 1.8 × 10^-⁵ W/m². If the area of Larry's ear through which the sound passes is 2.1 × 10^-³ m², what is the total energy entering each of Larry's ears during the workday? A)1.8 × 10^-⁵ J B)2.2 × 10^-⁴ J C)7.4 × 10^-⁴ J D)1.1 × 10^-³ J E)4.1 × 10^-³ J

Question

Quizplus · Accepted Answer

The total energy is calculated by multiplying the intensity by the area and the time: (1.8 × 10^-5 W/m^2) × (2.1 × 10^-3 m^2) × (8 hours × 3600 seconds/hour) = 1.1 × 10^-3 J.

During a Typical Workday (Eight Hours), the Average Sound Intensity