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Pressure, questions - Coggle Diagram
Pressure
Notes
P = F/A
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for minimum pressure, take F/max Area
for max pressure, take F/min Area
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breathing:
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when volume increases, pressure increases
external pressure becomes higher, so air rushes in
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suction cups
squeeze all the air out
partial pressure (inside pressure lower, outside pressure higher)
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doesn’t work on the wall
rough surface, can’t seal it properly , air still can enter
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worksheet
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explain why when you do handstand, the pressure exerted is greater than when standing
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since P = F/A + weight remained same, pressure exerted on hands would be greater
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perpendicular distance between force exerted by the foot to the pivot is > than perpendicular distance between force on piston to pivot.
since moment produced by both forces are the same, moments = F x D
Hence, force on the piston will be > than force exerted by foot.
workbook
as bubble goes up, as pressure goes down, volume increases: PV = CONSTANT (PV = nRT)
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