⚛️ PHYS 131 Study Guide – Master First-Year Physics with Confidence

physics 131


Semester 2



January


2024

, Week 1- static fluids I


fluid-liquid or
gas

density (P) density (P)
↳ fluid has
each identifying
m
D =
Y
Pressure · force applied to an area Idetermines if object floats
-
force + to surface


Pwater =
19/cm3 =

1000kg/m3
101 . 3 kpa or 101300pa
Fluid pressure in elquid I gas WEIGHT
ATMOSPERIC

pressure (pascels)
P ,
=

Ogh + Patm



p =
E
&
Pressure

fluid &
here should

atmospheric
include


pressure
↑ un
fluids
un
open
so
container
atm




P
, Pgh + Patm whats the P2 if filled water
=
Ex pressure at , w/




·
P2 =
P1 +
@ same heights ,
pressure will be equal

Patm =
101300 pa


om P2 = Patm +
Ogn

-
=
101300 +
1000 (9 .
8) (4) =
140500pa >
-



140 .


5 kpa




Pascals principle
-




pressure changes to an enclosed fluid is transmitted throughout

vessel undiminished


pr
S

= Y
ame
X
Ex hydraulic press

&


> F
P

P =
Pa and p = -




Atmospheric Pressure weight of air above point
-




↳
Hydrostatic equation pressure is at bottom of diff sized container
-



same


I height is same



↓
Pabs =
Pgauge
+
Patm > systolic >
-


max blood pressure
why ?
-
diastolic min . blood pressure
Sanger
(p v initial p trapped




sameilogn
* equilibrium a

Patm +
Ogn is the
pregn en i s



Pe can be found




Summary
:



fluids a same height have same pressure

pascel's principal-keeping all pressure the same throughout vessel


equilibrium can be used