A Microphone in the Ocean Is Sensitive to the Sounds

question 61

Short Answer

A microphone in the ocean is sensitive to the sounds emitted by porpoises. To produce a usable signal, sound waves striking the microphone must have an intensity of 1.02 × 10−¹¹ W/m². If porpoises emit sounds with a power of 0.049 9 W, how far away can a porpoise be and still be heard? Disregard absorption of sound waves by the water.

Understand the concept of unemployment and its implications on the economy.

Grasp the law of increasing costs and its relevance to economic decision-making.

Identify the factors that contribute to the law of increasing costs.

Comprehend the concept of opportunity cost and its critical role in economic choices.

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Definitions:

Message

A piece of information or communication sent from one person or entity to another, typically through verbal, written, or digital means.

Encoder

A device or process that converts information from one format or code to another, often for the purpose of standardization, speed, secrecy, or compressions.

Sublimation

Used unconsciously to express socially unacceptable instinctive drives or impulses in approved and acceptable ways.

Painful Situation

A distressing or discomforting circumstance that causes mental or physical pain.