What is the acute danger in using a longer tube

Reference no: EM13983021

In snorkeling a swimmer breathes by means of a tube that extends above the water level. Why is the tube restricted to about 20 centimeters? That is, what is the acute danger in using a longer tube?

Reference no: EM13983021

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What is the acute danger in using a longer tube : In snorkeling a swimmer breathes by means of a tube that extends above the water level. Why is the tube restricted to about 20 centimeters? That is, what is the acute danger in using a longer tube?

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