Physics Flashcards
Torque
T = rFsin(theta)
Hydrostatic Pressure
Psub = pgh
Equivalents of Pressure
1 atm
760 mmHg
10^5 Pascals
760 Torr
Density
p = m/v
Specific Gravity
SG = p of fluid / p of water
Absolute Pressure
Pabsolute = Phydrostatic + Patmospheric
Gauge Pressure
Pgauge = Psystem - Patmospheric
Percent Submersion
% submerged = [(density of object) / (density of liquid)] * 100
Buoyant Force
Fbuoyant = pVg
Volume of Fluid Displaced
Vdisplaced = (mass of object) / (density of fluid)
Pascal’s Law
(F1 / A1) = (F2 / A2)
W = F1d1 = F2d2
Pythagorean Theorem
a^2 + b^2 = c^2
c = sqrt(a^2 + b^2)
Kinematic Equation 1
d = 1/2(vi + vf)t
Kinematic Equation 2
vf = vi + at
Kinematic Equation 3
delta(x) = (vi)(t) + 1/2(at^2)
Kinematic Equation 4
vf^2 = vi^2 + 2(a)(delta(x))
Newton’s First Law
If velocity is constant:
Fnet = 0
Newton’s Second Law
Fnet = ma
Newton’s Third Law
F(AB) = -F(BA)
Center of Mass
xcenter = (m1x1 + m2x2 + … + mkxk) / (m1 + m2 + … + mk)
Static Friction
Fmax = mu(s)N
Kinetic Friction
Fkinetic = mu(k)N
Gravitational Formula
Fgrav = G((m1m2) / r^2)
Centripetal Acceleration
a = (v^2) / r
Centripetal Force
Fc = (mv^2) / r
Hooke’s Law
Fspring = -kx
Work
W = |F|dcos(theta)
Power
P = W / delta(t)
Kinetic Energy
KE = 1/2(mv^2)
Potential Energy
PEgrav = mgh
Elastic Potential Energy
PEelastic = 1/2(kx^2)
Conservation of Energy
Keinitial + PEinitial = KEfinal + PEfinal
Work-Energy Theorem
W = delta(KE) = KEfinal - KEinitial
Work (Pressure-Volume Curve)
W = P * delta(V)
Kinetic Energy of Particle
KE = 1/2(mv^2)rms
Kinetic Energy of a Particle
KE = 3/2(kB)T
Root Mean Square of Velocity
v(rms) = sqrt(3RT / Mm)
Celsius to Fahrenheit
C = (F - 32) * 5/9
Fahrenheit to Celsius
F = (C * 9/5) + 32
First Law of Thermodynamics
delta(U) = Q - W
Thermal Expansion 1
delta(L) = alpha(L) * L * delta(T)
Thermal Expansion 2
delta(V) = alpha(V) * V * delta(T)
Ideal Gas Law
PV = nRT
n = 6 x 10^23