You Shout at a Cliff,and Hear Your Echo in 2

question 5

Short Answer

You shout at a cliff,and hear your echo in 2 seconds.If the speed of sound in the air is 340 m/s,the distance of the cliff from you is __________.

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Definitions:

Satisfaction

The fulfillment of one's wishes, expectations, or needs, or the pleasure derived from this.

Marginal Benefit

The additional benefit or usefulness experienced by consuming or producing another unit of a good or service.

Marginal Cost

The supplementary cost of manufacturing another unit of a product or service.

Consume

The action of using up goods and services to satisfy personal or collective wants or needs.