Physics formula Flashcards
Gravity
9.8 m/s² or 10 m/s² (used in NMAT for easy calculation)
Formula of Potential Energy
PE = mgh
formula of velocity (2)
V= D/T (Distance divided by Time); Vf² - Vᵢ² = -2g(△y)
formula of projectile motion (2)
.
Formula of Torque
T = Ima
Density of water
1000 kg/m³
Formula of Force
F = mass x acceleration
formula of acceleration
final velocity-initial velocity/time or △V/△T
Formula of distance
d = velocity x time
Formula of time
distance/velocity
formula of pressure (3)
pressure = force/area ; p = dgh (Pgauge = dgh; Pabs = Pgauge + Patm)
formula of momentum
p = mass x velocity
Formula of impulse
Ft = mass x Δvelocity
thermodynamics (law of conservation of energy)
Q = mcΔT(temperature)
Power, Energy, and Thermodynamics
Q = power x time
Formula of work
work = force x distance
thermodynamics: heat transfer (conduction)
Q = kA (Q=thermal current, k=thermal conductivity, A = area)
Formula of efficiency
output energy / input energy
Coulomb’s Law
F = k (q₁*q₂/r²) (F=electric force, k=Coulomb’s constant, q1 and q2=charges, r=distance separation)
formula of electric charge
Q = C V (Q=electric charge, C=capacitance, V=voltage)
formula of voltage
V = Q / C
Formula of current
I = V / R
formula of wavelength and frequency
λ = c/f (speed of light / frequency) ; f = 1 / 2π (LxC) (inductance x capacitance)
Formula of Kinetic Energy
KE = 1/2 mv² (m=mass, v=velocity)
mass of electron
9.11 x 10^-31 kg
formula of weight
W = mass x gravity
formula of mass
weight/gravity
formula of thermal expansion
ΔL = αLΔT (ΔL=change in length, α=coefficient of linear expansion, ΔT=temperature)
How to convert Celsius to Fahrenheit (ex. 26 C)
(C x 1.8) + 32 (Multiply by 1.8 then add 32) Ans: 78.8 F
How to convert Fahrenheit to Celsius (ex. 80 F)
C = 5/9 (F - 32) Ans: 26.7
1 meter = ___cm
100 cm
1 cal = _____ J
4.184 J
