What does the star mean in this table?

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The * symbol in the table indicates the throat location, which is associated with the risk of choking. This highlights the importance of awareness regarding potential hazards in that area. Understanding the significance of this symbol can enhance safety measures. The discussion emphasizes the need for clear communication about choking risks. Proper identification of such hazards is crucial for prevention.
FannoFlow88
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more a query on meaning of star. i think static but unsure
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If have close pipe system with water inside pressurized at P1= 200 000Pa absolute, density 1000kg/m3, wider pipe diameter=2cm, contraction pipe diameter=1.49cm, that is contraction area ratio A1/A2=1.8 a) If water is stationary(pump OFF) and if I drill a hole anywhere at pipe, water will leak out, because pressure(200kPa) inside is higher than atmospheric pressure (101 325Pa). b)If I turn on pump and water start flowing with with v1=10m/s in A1 wider section, from Bernoulli equation I...

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