Physics 3
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Density (p)
p=m/v
what two SI units are the same value?
mL and cm^3
Weight (w)
w=mg
m=pV
W=pVg
Pressure (P)
P=NormalForce/Area (Pa)
Pa SI unit equal to
Pa=N/m^2
Conversions between pressures
1.013e5 Pa=1atm=760 torr= 760 mmHg
Absolute Pressure
P=Po+pgh (N/m^2)
Gauge Pressure (Pg)
Pg=P-Patm
Pascals Principles
P=F1/A1=F2/A2
V=A1d1=A2d2
W=F1d1=F2d2
Continuity Equation
v1A1=v2A2
Bernoulli's Equation
P1+densitypv1^2/2+densityp(g)(y1)=P2+densitypv2^2/2+densityp(g)(y2)
Youngs Modulus (elastic properties of solids)
(force applied perpendicular to objects surface)
Y=(F/A)/(deltaL/L)
Shear Modulus
(force is applied parallel to objects surface)
S=(F/A)/(x/h)
Youngs Modulus vs. Shear Modulus
Both show relationship of stress/strain.
Strain is shown differently
Bulk Modulus
change in volume with applied pressure
B=(F/A)/(dletaV/V)
The 3 Modulus
large number=rigid material
small number=malleable material
speed of light
3E8
How to calculate wavelength or frequency
c=(wavelength)(frequency)
Visible Spectrum Boundaries
Red (760nm) back to Violet (380nm)
law of reflection
theta1=theta2
Mirror equation
1/o+1/i=1/f=2/r
magnification of an item
m=i/o
less than 1=reduced
more than 1= enlarged
When is o positive/negative? (mirror)
Positive= object in front of the mirror
Negative= object is behind the mirror
When is i positive/negative? (mirror)
positive= image in front of the mirror
negative= image is behind the mirror
When is r positive/negative? (mirror)
Positive= concave mirrors
Negative= convex mirrors
When is f positive/negative? (mirror)
positive= concave mirrors
negative= convex mirrors
When is m positive/negative? (mirror)
positive= image is upright
negative= image is inverted
snells law (law of refraction)
n1sin1theta=n2sin2theta
Planks constant (h)
4.14e-15 eV*s
6.63e-34 J*s
Wiens displacement Law
wavelengthpeak*T=constant
constant=2.9e-3 m*K
total energy emitted by a blackbody
Et=constant(K)^4
constant=5.67e-8
Energy of a photon
E=hf
ke of an ejected electron
Kmax=hf-W
Angular Momentum
L=mvr
electron- L=nh/2pi
Kinetic Energy
K=1/2mv^2
Energy of electron with quantum number
E=-Rh/n^2
Rh=2.18e-18
E=-13.6eV/n^2
Change in electrons energy
deltaE=Ef-Ei
emission of photon-- hf=-deltaE
absorption of photon-- hf=deltaE
mass lost as binding energy in a nucleus
E=mc^2
exponential decay
n=noe^-wavelength(t)
Card Set Information
Author:
Anonymous
ID:
266743
Filename:
Physics 3
Updated:
2014-03-17 22:10:24
Tags:
physics
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Description:
physics 3 mcat
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