1
Q
average density
A
total density of system made of different materials (add each mass, divide by each volume)
2
Q
amount of liquid displaced
A
volume of object
3
Q
pascal’s principle
A
- increasing pressure at one location for enclosed fluid increases it in all locations
- hydraulic press
4
Q
hydraulic press
A
F1/A1 = F2/A2 or F1/F2 = A1/A2
5
Q
total/absolute pressure
A
sum of atmospheric pressure and gauge pressure
6
Q
pressure
A
- magnitude of perpendicular force executed per unit area
- forces that produce pressure are exerted equally in all directions but add to produce net force that is perpendicular to surface
7
Q
gauge pressure
A
- pressure exerted on submerged object relative to atm
- positive for pressure above atm, negative for pressure below
8
Q
buoyancy
A
- net upward force of fluid on object
- buoyant force = weight of fluid displaced
- vsub/vobj = pobj/pfl
9
Q
flow rate
A
- constant at every point
- volume of fluid passing point every second
- principle of continuity because of conservation of m
10
Q
bernoulli’s principle
A
the faster a fluid moves, the lower pressure on surrounding surfaces
ap physics
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