# physics

Home > Preview

The flashcards below were created by user walk1010 on FreezingBlue Flashcards.

1. The Big 5
• 1) x = vt = ½ (v0 + v)t
• 2) x = v0t + ½ a t2
• 3) x = vt - ½ a t2
• 4) v = v0 + at
• 5) v2 = v02 + 2ax
• 6) v = (2gh)1/2
2. Stress
stress = F/A
3. Strain
strain = ∆L / L
4. Hooke's Law
• ∆L = FL/EA
• *where E is the modulus of elasticity
5. Torque
t = rF sinθ
6. Impluse
J = FT = ∆p
7. Work
W = Fd cosθ
8. Power (with respect to work)
• P = W/t = Fv
• * only if F//v
9. Density of H2O
ρ = 1000 kg/m3 = 1 g/cm3
10. Bernoulli's Equation
P1 + ρ1gy1 + ½ ρv12= P2 + ρ2gy2 + ½ ρv2
11. Pascal's Law
F1 / A1 = F2 / A2
12. Volume Flow Rate and Continuity Equation
• Q = AV
• A1V1 = A2V2
13. Hydrostatic Pressure
P = P0 + ρgD = Patm + ρgD (if P at surface is Patm)
14. Fraction Submerged
• % submerged = Vsub / Vobject = ρojbect / ρfluid
15. Current
i = Q/t
16. Power in AC Circuit
P = irmsVrms = imax / √2 * Vmax / √2
17. Resistance
R = ρL / A
18. Potential Energy of Spring
PE = ½ kx2
19. Frequency of Pendulums and Springs
• Springs: w = 1/2π √k/m (wackem)
• Pendulums: w = 1/2π √g/l (wiggle)
20. Harmonic Wavelength of Open Pipe and Closed Pipe
• Open: λ = 2L/n
• Closed: λ = 2L/n
21. Coulomb's Law
FE = k Qq / r2
22. Electric Field due to Q
E = k Q/r2
23. Electric Force by Field
FE = qE
24. Electric Potential Due to Q
V = kQ/r
25. Magnetic Force
FM = qvB sin θ
26. Capicitance
C = kε0A/D = Q/V
27. Electric Field Between Plates
• V = ED
• E = V/D
28. Potential Energy of Capictors
PE = ½QV = ½CV2
29. Capacitors in Parallel
Cp = C1 + C2 + ...
30. Speed of Sound
V = √ B/ρ
31. Intensity
I = Power / A
32. Intensity in dB
β = 10 log I/I0
33. Doppler Effect
• fD = fs * v ± vD / v -+ vs
• *approaching means increasing f
34. index of refraction
n = c/v
35. Total Internal Refraction
• sin θcrit = n2 / n1
• *where n2 < n1
36. Joul

### Card Set Information

 Author: walk1010 ID: 27400 Filename: physics Updated: 2010-07-20 05:59:09 Tags: physics Folders: Description: physics Show Answers:

Home > Flashcards > Print Preview