What is the rms speed of nitrogen molecules contained in a 13^(3) m volume at 4.2 atm if the total amount of nitrogen is 1700 mol? (Note: the molar mass of nitrogen molecules is 28 g/mol.)
What is the rms speed of nitrogen molecules contained in a 13^(3) m volume at 4.2 atm if the total amount of nitrogen is 1700 mol? (Note: the molar mass of nitrogen molecules is 28 g/mol.)
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What is the rms speed of nitrogen molecules contained in a
13^(3) m volume at 4.2 atm if the total amount of nitrogen is 1700 mol? (Note: the molar mass of nitrogen molecules is 28 g/mol.)

Transcribed Image Text:THERMODYNAMICS
Thermal Expansion:
AL = aL,AT
AV = BV,AT
Ideal Gas Law:
PV = nRT = NkT
Kinetic Theory:
KE=mvms =kT (ideal gas)
Equipartition Principle: Eint =kT (Cy =}R) per active degree of freedom
Calorimetry:
Molar Heat Capacities:
Q = MCAT = NCAT
Q= mL
y =C, / Cy
First Law of Thermodynamics: AEn = Q-W (W is work done by system)
(independent of path)
Cp - Cy = R
Internal energy:
AEin = NC,AT
Work: W =
|P dV = 0 (isochoric ) = PAV (isobaric) = nRT In (V, /V,) (isotherma l)
Adiabatic processes:
Q=0
PV' = constant
ΔQ
= kA
At
ΔΤ
ΔQ
= ɛgATª
At
Conduction:
Radiation:
Ax
TL
TH
Heat Engines:
e =
=1-
31-
= ejdeal
Entropy:
Q
AS =
S= k ln W
AS 20 (2nd Law of Thermodynamics)
l'ave
Avogadro's Number:
N = 6.02 x 10 23 mol -1
Boltzmann's constant:
k =1.38 x 10-23 J/K
Atmospheric pressure:
Standard Temperature & Pressure (STP):
1 atm =1.01 × 105 Pa
P =1 atm
T = 0°C
Т. 3 - 273.15 °C
R=8.314 J/mol · K
1 cal = 4.186 J
o = 5.67 × 10-8 W/m2 - K4
lu =1.66 x 10-27 kg
Absolute zero:
Ideal Gas constant:
Mechanical Equivalent of Heat:
Stefan-Boltzmann constant:
Atomic mass unit:
ОРTICS
Speed of light: c=3.00 × 10® m/s in vacuum
v=c/n in a medium
Reflection:
0; = 0,
Refraction:
n, sin 0, = n, sin 02
1
Spherical Mirrors and Lenses:
d.
h;
m =
d;
h,
1
1
2
%3D
d;
f
Rminor
d.
1
1
= (n - 1) –+
R,
Lensmaker's Equation: P=
f
R2
Thin film interference: 2t = {m_or (m+½}a/ nglm
Double slit interference & Diffraction gratings: dsin 0 = må (bright fringes)
Single slit diffraction:
a sin 0 = m2 (dark fringes)
Circular diffraction & Rayleigh criterion:
sin 0 =1.222/ D (first dark fringe)
Polarizers:
I =}I, (originally unpolarized)
I = I, cos² 0 (already polarized)

Transcribed Image Text:WAVES
27
Simple Harmonic Motion:
x(t) = Acos(@t + Ø)
@ = 2nf :
T
a =-o?x
%3D
max
Springs:
F =-kx
U =}kx?
@= \k/m
Simple Pendulum:
@=Jg/L
D(x,t) = DM sin(kx±@t + ø)
v = f1 = -
k
Waves:
k =
Transverse waves on a string:
v= F, /µ
ny
f.
2L
Standing waves on a string:
(n=1,2,3...)
ny
Standing waves in a pipe with one closed end:
fn
4L
(n=1,3,5...)
ny
Standing waves in a pipe with two open ends:
fn
(n=1,2,3...)
2L
P
Intensity of waves:
I =
27? pvf² DM
A
Sound level:
B = (10 dB) log 10 (I / I )
I c1/r?
= 10¬12 W/m2
v±v
f'=
upper: towards
lower: away
observer
Doppler Effect:
y FV source
Beat frequency:
foeat =|f2 - fll
g=9.80 m/s ?
Speed of sound in air at 20°C: v=343 m/s
2
Acceleration due to gravity:
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