A Vertical Tube That Is Closed at the Upper End

question 12

Short Answer

A vertical tube that is closed at the upper end and open at the lower end contains an air pocket. The open end of the tube is under the water of a lake, as shown in the figure. When the lower end of the tube is just under the surface of the lake, where the temperature is 37°C and the pressure is 1.0 × 10⁵ Pa, the air pocket occupies a volume of 630 cm³. Suppose now that the lower end of the tube is at a depth of 86 m in the lake, where the temperature is 7.0°C. What is the volume of the air pocket under these conditions? The density of the water in the lake is 1000 kg/m³.

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Definitions:

Heart Rate

The number of heartbeats per unit of time, typically expressed as beats per minute (bpm), indicating the heart's efficiency in pumping blood throughout the body.

Blood Pressure

The force exerted by circulating blood upon the walls of blood vessels, typically measured in the arteries.

Dehydration

The condition resulting from excessive loss of body water, impairing normal bodily functions.

Blood Clots

Semi-solid masses of blood that form as a result of the coagulation process, which prevents excessive bleeding when blood vessels are injured.