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Question la A cube of side 0.040 m is floating in a container of liquid. Fig. 3.1 shows that the surface of the liquid is 0.028 m above the level of the bottom face of the cube. air 0.040 m cube 0.028 m liquid valve pump Fig. 3.1 The pressure of the air above the cube exerts a force on the top face of the cube. The valve is closed. Explain, in terms of air molecules, how the force due to the pressure of the air is produced.
Sagot :
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