Physics Equations Flashcards
1
Q
Density (roh)
A
Roh (p)= m/v
2
Q
Density units
A
kg/m^3 ; g/ml ; g/cm^3
3
Q
Density of water
A
1g/cm^3 = 1000kg/m^3
4
Q
Weight =
A
Roh or density (p)Vg
5
Q
Specific Gravity
A
Density of substance/ density of water (no units)
6
Q
Pressure
A
Scalar
F/A
7
Q
Units for Pressure
A
N/m^2
8
Q
Pressure of static fluids of uniform density in a sealed vessel is
A
P= (roh or density)(g)(z) Z= depth of the object
9
Q
Absolute pressure
A
P= Po + (roh or density)(g)(z)
10
Q
Gauge pressure
A
Absolute pressure - Atmospheric pressure P -Patm
[Po + (roh or density)(g)(z)] - Patm
11
Q
Pascal’s Principle
A
P= (F1/A1) = (F2/A2)
(A1 x d1) = (A2 x d2)
so….
W=F1d1=F2d2
12
Q
Buoyancy
A
Fb=Fg
p(roh)Vg)= (p(roh)Vg
13
Q
Continuity Equation
A
A1V1= A2V2
14
Q
Bernoulli’s equation
A
((1/2)pV^2) + (pgh) +P = Constant K
15
Q
Percent submerged
A
(Density of the object/ density of the fluid) x 100%
