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Bulk flow—Pressure difference. Plant Physiology UNI 2009. Pressure difference. Liquids: both positive pressure. X. Valve (closed). Pipe #1 Pressure = +1 bars. Pipe #2 Pressure = +3 bars. What happens when we open valve?. Pressure difference. Liquids: both positive pressure. ).

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## Bulk flow—Pressure difference

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**Bulk flow—Pressure difference**Plant Physiology UNI 2009**Pressure difference**Liquids: both positive pressure X Valve(closed) Pipe #1 Pressure = +1 bars Pipe #2 Pressure = +3 bars What happens when we open valve?**Pressure difference**Liquids: both positive pressure ) Valve(open) ( Pipe #1 Pressure = +1 bars Pipe #2 Pressure = +3 bars Bulk Flow from higher to lower pressure Pressure difference = ?**Pressure difference**Liquids: both negative pressure X Valve(closed) Pipe #1 Pressure = -2 bars Pipe #2 Pressure = -5 bars What happens when we open valve?**Pressure difference**Liquids ) Valve(open) ( Pipe #1 Pressure = -2 bars Pipe #2 Pressure = -5 bars Bulk Flow from higher to lower pressure Pressure difference = ?**Pressure difference**Liquids: one negative pressure one positive pressure X Valve(closed) Pipe #1 Pressure = +1 bars Pipe #2 Pressure = -4 bars What happens when we open valve?**Pressure difference**Liquids: one negative pressure one positive pressure ) Valve(open) ( Pipe #1 Pressure = +1 bars Pipe #2 Pressure = -4 bars Bulk Flow from higher to lower pressure Pressure difference = ?

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