# Physics 3

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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)
 Author: Anonymous ID: 266743 Card Set: Physics 3 Updated: 2014-03-17 22:10:24 Tags: physics Folders: Description: physics 3 mcat Show Answers: