Fluid flowing in a sphere and leaving

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The discussion centers on the dynamics of fluid flow from a sphere, specifically analyzing how the flow rate is influenced by the height of the liquid within the sphere. Participants confirm that the flow rate is indeed dependent on the current height of the liquid, as the pressure at the outlet decreases with a reduction in height. The integration of the flow rate over time is necessary to accurately model the changing flow as the liquid level drops. The equation for the volume of liquid not filled up is also referenced, emphasizing its relevance to the problem.

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Just checking if this is correct, and if the equation in part c implies that the flow rate out changes with time, or is just based off the initial height..I think it changes and therefore requires this integration. Also, I looked up the equation for the volume of a liquid that is not filled up, not sure if it is correct or not
 

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The flow always depends on the current height, of course - benzene has no "memory" of some initial height. The physical reason for the height-dependence is the pressure at the bottom, which drops with a reduced height.
 

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