Term

Definition


Term

Definition
1000 kg/m^{3 }or 1 g/cm^{3} or 1 kg/L 


Term

Definition
sp. gr. = p/p_{H2o}
specific grav = density of substance/density of water
p_{H20} 1 kg/L 


Term
Force of grav on fluid eq. 

Definition
F_{grav}=mg=pVg
pdensity
Vvolume
ggrav 


Term
Pressure eq. with regard to force and area 

Definition
P = F / A
force (perpendicular)/area
P in (Pa) 


Term
Hydrostatic Gauge Pressure eq. 

Definition
P_{gauge}=P_{fluid}Dg
Ddepth of object



Term
Eq. for P_{total} when atmospheric and hydrostatic pressure both applicable.
eq. when lid closed off from atmosphere, but layer of gas above surface of water. 

Definition
both atmospheric and hydrostatic applicable:
P_{total}=P_{atm} + P_{gauge}
lid closed but layer of gas:
P_{total}=P_{at surface} + P_{gauge} 


Term
describe when/if hydrostatic gauge pressure and total pressure is proportional to depth and density of fluid. 

Definition
hydrostatic gauge pressure is proportional to depth and desnity of fluid
Total pressure is not proportional to depth and desnity of fluid if P_{at surface} isn't zero. 


Term
Archimedes' bouyancy principle and eq. 

Definition
magnitude of buoyant force equal to weight of fluid displaced by object
F_{buoy}= p_{fluid}V_{sub}g = w_{object}
V_{sub}volume submerged
w_{object} weight of object 


Term
Floating objects in equilibrium on surface eq. 

Definition
w_{ob}_{ject} = F_{buoy}
V_{sub}/V = p_{object}/p_{fluid}
p_{object} < p_{fluid} : floats 


Term

Definition
w_{apparent} = w  F_{Buoy} 


Term

Definition


Term
How force, area and distance relate in hydraulics 

Definition
F_{1}/A_{1}=F_{2}/A_{2}
A_{1}d_{1}=A_{2}d_{2}
F_{2}d_{2}=F_{1}d_{1}



Term

Definition
F_{surfacetension}=2γL
γcoefficent of ST
Llegnth 


Term

Definition


Term
How does flow rate in a pipe change when a fluid is incompressable? 

Definition
It doesn't. When fluid incrompressable, flow rate stays the same everywhere in pipe. 


Term

Definition
A_{1}V_{1}=A_{2}V_{2}
Aarea=diameter^{2}=∏r^{2} 


Term
Bernoulli's law and eq. for ideal fluids. 

Definition
incompresable
negligable viscosity
steady flow rate
 laminar flow (stream lines don't cross, flows smoothly)
P_{1} + .5pv_{12} + pgy_{1} = P_{2} + .5pv_{2}^{2}+pgy_{2}
yheight 


Term

Definition
v_{efflux} = √(2gD)
v_{efflux}  water shooting out hole
D  distance from surface of liq to hole 


Term
pressure in realation to flow speed 

Definition
pressure lower where flow speed greater 


Term
equation for and explanation of young's modulus 

Definition
E=(F/A)/(ΔL/L) = stress/strain
E  elastic modulus or young's modulus.
a constant for a given material and a measure of its strength 


Term
based on young's modulus, what would a graph of stress over strain look like? 

Definition


Term
What equation would you use to solve a question about the curshing mass needed to cause a % change in legth in a bone when the bones area is given? the compressive strength is also given. 

Definition
you'd rearange young's modulus eq. so that:
F= (ΔL/L)AE=mg
and solve for m 


Term
What unit is Young's modulus in? 

Definition


Term
eq. for gravitational potential energy 

Definition


Term
If two objects are submerged in a fluid at the same depth, compared to the smaller object, will the larger one expereince larger or less fluid pressure? 

Definition
Equal pressure. the pressure due to a fluid is independent of the size of the object.
P_{fluid}=ρgd
P pressure
ρdensity of fluid
g grav
d  depth of object 

