Physics 3

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Anonymous
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266743
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Physics 3
Updated:
2014-03-17 18:10:24
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physics
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physics 3 mcat
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  1. Density (p)
    p=m/v
  2. what two SI units are the same value?
    mL and cm^3
  3. Weight (w)
    • w=mg
    • m=pV
    • W=pVg
  4. Pressure (P)
    P=NormalForce/Area (Pa)
  5. Pa SI unit equal to
    Pa=N/m^2
  6. Conversions between pressures
    1.013e5 Pa=1atm=760 torr= 760 mmHg
  7. Absolute Pressure
    P=Po+pgh (N/m^2)
  8. Gauge Pressure (Pg)
    Pg=P-Patm
  9. Pascals Principles
    • P=F1/A1=F2/A2
    • V=A1d1=A2d2
    • W=F1d1=F2d2
  10. Continuity Equation
    v1A1=v2A2
  11. Bernoulli's Equation
    P1+densitypv1^2/2+densityp(g)(y1)=P2+densitypv2^2/2+densityp(g)(y2)
  12. Youngs Modulus (elastic properties of solids)
    • (force applied perpendicular to objects surface)
    • Y=(F/A)/(deltaL/L)
  13. Shear Modulus
    • (force is applied parallel to objects surface)
    • S=(F/A)/(x/h)
  14. Youngs Modulus vs. Shear Modulus
    • Both show relationship of stress/strain.
    • Strain is shown differently
  15. Bulk Modulus
    • change in volume with applied pressure
    • B=(F/A)/(dletaV/V)
  16. The 3 Modulus
    • large number=rigid material
    • small number=malleable material
  17. speed of light
    3E8
  18. How to calculate wavelength or frequency
    c=(wavelength)(frequency)
  19. Visible Spectrum Boundaries
    Red (760nm) back to Violet (380nm)
  20. law of reflection
    theta1=theta2
  21. Mirror equation
    1/o+1/i=1/f=2/r
  22. magnification of an item
    • m=i/o
    • less than 1=reduced
    • more than 1= enlarged
  23. When is o positive/negative? (mirror)
    • Positive= object in front of the mirror
    • Negative= object is behind the mirror
  24. When is i positive/negative? (mirror)
    • positive= image in front of the mirror
    • negative= image is behind the mirror
  25. When is r positive/negative? (mirror)
    • Positive= concave mirrors
    • Negative= convex mirrors
  26. When is f positive/negative? (mirror)
    • positive= concave mirrors
    • negative= convex mirrors
  27. When is m positive/negative? (mirror)
    • positive= image is upright
    • negative= image is inverted
  28. snells law (law of refraction)
    n1sin1theta=n2sin2theta
  29. Planks constant (h)
    • 4.14e-15 eV*s
    • 6.63e-34 J*s
  30. Wiens displacement Law
    • wavelengthpeak*T=constant
    • constant=2.9e-3 m*K
  31. total energy emitted by a blackbody
    • Et=constant(K)^4
    • constant=5.67e-8
  32. Energy of a photon
    E=hf
  33. ke of an ejected electron
    Kmax=hf-W
  34. Angular Momentum
    L=mvr

    electron- L=nh/2pi
  35. Kinetic Energy
    K=1/2mv^2
  36. Energy of electron with quantum number
    • E=-Rh/n^2
    • Rh=2.18e-18
    • E=-13.6eV/n^2
  37. Change in electrons energy
    • deltaE=Ef-Ei
    • emission of photon-- hf=-deltaE
    • absorption of photon-- hf=deltaE
  38. mass lost as binding energy in a nucleus
    E=mc^2
  39. exponential decay
    n=noe^-wavelength(t)

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