# Shared Flashcard Set

## Details

Physics Equations
Equations
18
Physics
03/16/2014

Term
 Momentum
Definition
 M= mvMomentum=mass x velocity
Term
 Energy
Definition
 ET = Ek + Ep or Ek = 1/2 mv2 or Ep = mgh
Term
 Work/Power
Definition
 P=Δw/Δt Power = Change in work/change in time
Term
 Current
Definition
 I = Q/t Current = Charge flow/secs Amperes=Coulumbs/secs
Term
 Voltage
Definition
 V=IR Voltage = Current/Resistance
Term
 Resistors in series Resistors in Par.
Definition
 Req= R1 + R2 .. 1/Req + 1/R1 + 1/R2
Term
 Force
Definition
 Force = ma Force= mass x acceleration
Term
 Pressure
Definition
 P= F/A Pressure = Force / Unit of Area
Term
 Pressure in Static Water
Definition
 ΔP = ρgΔh Change in pressure = density x gravity x Δ in height
Term
 Continuity Equation
Definition
 ρvA = constant Density x velocity of fluid x X-sectional area =constant
Term
 Kirchoffs law
Definition
 Σi = 0 at a junction ΣΔV= 0 in a loop V= voltage sum of currents = 0 sum of voltage changes in a loop=0
Term
 Weight
Definition
 W=mg Mass and gravitation constant
Term
 Bouyant force
Definition
 ρ = mass /volume Fb= Vρg = mg
Term
 Optics Manification Equation
Definition
 m = -i/o image over object If M= negative = inverted     If M= Positive = erect image if i is smaller than o = diminished
Term
 Torque Forces
Definition
 L1 = F1× r1 (CCW + ve)   L2 = F2× r2 (CW - ve)
Term
 newtons second law
Definition
 ∑F=m x a mass times acceleration
Term
 Law of gravitation
Definition
 F= KG(m1m2/ r2) r=distance between bodies KG is the constant m1m2=masses
Term
 Coulumbs law (use with law of gravitation)
Definition
 F = k(q1q2/r2) Note: if distance r2 is doubled, force is quartered
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