Formulas Flashcards
1
Q
hydrologic equation
A
inflow = outflow +/- changes in storage
2
Q
evapotranspiration
A
Et = Si + Ir + Pr - Sf - De
3
Q
latent heat of vaporization
A
Hv = 597.3-0.564T
4
Q
work
A
W = Force x distance
5
Q
Force
A
force = mass x acceleration
6
Q
weight
A
weight = mass x gravity
7
Q
density
A
density = mass/volume
8
Q
specific weight
A
y = weight/volume
y = density x gravity
9
Q
Pressure
A
P = Force / Area
10
Q
Porosity
A
100 Vv/V
11
Q
total porosity
A
100 [1-(Pb/Pd)]
12
Q
uniformity coefficient
A
Cu = d60/d10
13
Q
discharge
A
Q = -KA [(ha-hb)/L]
or
Q= -KA [dh/dl]
14
Q
specific discharge
A
q = Q/A
15
Q
darcy’s coefficient
A
K = -L^3/T / L^2 (L/L) = L/T
