All Equations Flashcards
Final Velocity (vf) =
vf = vo + at
Conservation of Momentum for Inelastic and Completely Elastic Collisions =
mavai + mbvbi = mavaf + mbvbf
Celsius to Kelvin Conversion =
Tc = Tk - 273
Equation to determine the angular frequency (ω) of a spring:
ω = 2πf = √(k/m)
where m is the mass of the object
Equation to determine the beat frequency:
fbeat = |f1 - f2|
Equation to determine pressure:
P = F/A
where F is the normal force and A is the area; a scalar quantity; units = Pa = N/m2
Equation to determine the buoyant force on a floating object:
Fbuoy = (Vfluid displaced)(pfluid)(g) = weight of the object
units = (kg)(m/s2)
Speed of light in a vacuum (c) =
3.8 X 108 m/s
Equation to determine the peak wavelength emitted by an object at a given temperature (Wien’s Displacement Law):
(λpeak)(T) = constant = 2.9 X 10-3 m•K
Equation to determine the critical velocity (Vc) of a fluid flowing through a tube:
vc = NRη/ρD
where NR is a given constant; η is the viscosity of the fluid, ρ is the density of the fluid, and D is the diameter of the tube
units = m/s
Force of Static Friction (fs) =
0 ≤ fs ≤ usN
Equation to determine the buoyant force on a fully submerged object:
Fbuoy = (Vobject submerged)(pfluid)(g)
units = (kg)(m/s2)
Electrostatics F, U, E, and V grid

Equation to determine Young’s Modulus (perpendicular application of force):
Y = (F/A) / (∆L/L)
it gives the change in length of a solid when a pressure is applied perpendicularly to it (compression or stretching)
Equation to determine the period (T) of a pendulum:
T = 2π√(<span>L</span>/<span>g</span>)
Gamma decay is :
the emission of a gamma photon. The energy of the parent nucleus is lowered, but the mass and atomic number remain the same.

Equation to determine the position of minima on the screen in a double slit experiment:
dsinθ = (m + 1/2)λ (m = 0, 1, 2, …)
where d is the distance between the slits, θ is the angle between the center of the slits and the maxima, λ is the wavelength of the light, and m is the integer representing the order
USE SMALL ANGLE APPROXIMATION
SINθ **≈ **TANθ
Equation to determine the wavelength of standing waves for closed pipes:
λ = 4L/n
where L is the length of the closed pipe and n is the number of nodes
Coulomb’s Law (F) =
F = kq1q2/ r2
(k = 9 X 109)
[gives the force two charges exert on one another]
Final Velocity Squared (Vf2) =
vf2 = vo2 + 2a(Δx)
Centripetal Force =
F = mv2/r
Change in volume of a fluid or object subjected to a change in temperature (ΔV) =
ΔV = βVΔT
(β = 3α = a constant)
When PE is converted to KE completely, velocity (v) =
v = √ 2gh
1/5 =
.2





