Physics Equations Flashcards
Kinematics
vf =
vf = v0 + a∆t
Kinematics
(vf)^2 =
(vf)^2 =(v0)^2 + a∆x
Kinematics
∆x =
2 equations
∆x = v0∆t +1/2at^2
∆x = v∆t
Torque
t =
t = r F sin(theta)
Positive = counterclockwise
Negative = clockwise
Newton’s LAw
Fnet =
Fnet = ma
Centripetal Force
Fc =
Fc = mv^2/r
Energy
U = PE =
mgh
Energy
KE =
KE = 1/2mv^2
Energy
U = Elastic PE =
U = 1/2kx^2
Work
W =
W = Fd = Fdcos(theta)
Work
P =
P = W/∆t
Units: J/s = Nm/s = Kgm^2/s^2
Mechanical Advantage
MA = Mechanical Advantage =
inclined plane
MA = length of incline/height of incline
Mechanical advantage
MA = Efficiency
MA = F_out/F_in
Laws of Thermodynamics
∆L =
∆V =
0th Law : Thermal Expansion
∆L = alpha L ∆T
∆V = beta V ∆T
Laws of Thermodynamics
q =
heat
q = mc∆T
Laws of Thermodynamics
q =
heat of transformation
q = mL
L = heat transformation
Law of Thermodyanmics
W =
work of gas
W = -P∆V
Fluids
p =
| density
p = m/V
Fluids
P =
| Pressure
P = F/A
Fluids
P_total =
|absolute pressure
P_total = P0 + pgh
Fluids
P_gauge =
| Gauge pressure
P_gauge = P - P_atm = P0 + pgz - P_atm
Fluid Dynamics
Q =
|Poiseuille’s Law
Q = πr^4∆P/8nL
Fluid Dynamics
Q =
| Flow Rate
Q = vol/time = Av
A = cross sectional area
V = velocity
Fluid Dynamics
Q =
| Continuity Equation
Q = v_1A_1 = v_2A_2
Fluid Dynamics
Bernoulli’s Equation
P_1 + 1/2pv_1^2 +pgh_1 = P_2 + 1/2pv_2^2 + pgh_2
