Da DaVinci Coke
Or, HONORS Fizzix MidTerm Exam Review
2014 TAYLOR SUPLEMENT
Chapters 12-16
Ch12 : Waves
• Hooke’s Law
– FR is restoring force in spring
– k is ‘spring constant’
– x is displacement stretched or
compressed
kxFR
Ch 12 : Waves
• Pendulums (Pendulae?)
– KEMAx = PEMAX
– Diagram p445
g
LT 2
Ch12 : Waves
• Amplitude
• Period
• Frequency
• Mass on spring
Tf
1
k
mT 2
Ch12 : Waves
• Types of Waves
– Transverse
– Longitudinal
Ch 12 : Waves
• Wave speed
fT
v
t
dv
Ch12 : Waves
• Interference & Transmission
Ch12 : Waves
• Interference & Transmission
Ch12 : Waves
• Reflection
Ch13 : Sound
• Production
– Vibrating object and a medium
Ch13 : Sound
• Characteristics
– Longitudinal & NEEDS a physical medium
– Human: 20 – 20KHz
– Travel in all 3-Directions
– Doppler Effect
Ch13 : Sound
• Doppler
Stationary Source Moving Source
Ch13 : Sound
• Sound Intensity
24 r
PI
A
PI
Ch13 : Sound
• Relative Intensity (Decibels!)
oI
Ilog10
90dB 10 x 80dB 100 x 70dB
109 = 10 x 108 = 100 x 107
Ch13 : Sound
• Harmonics
– Fundamental Frequency (1st Harmonic)
– f2=2f1 ...
– Harmonic Series on string
L
vnfn
2
Ch13 : Sound
• Open & Closed tubes (Instruments)
Open Closed
L=
½
L=
¼
Ch14 : Light & Reflection
• ElectroMagnetic Radiation (Spectrum)
– Radio through Gamma
Ch14 : Light & Reflection
• All EM’s travel at ‘c’ in a vacuum
– 3x108 m/s
• Reflection:
– i = r
Ch14 : Light & Reflection
• Flat Mirrors:
– Narcissus
• Michelangelo
Ch14 : Light & Reflection
Ch14 : Light & Reflection
• Curved Mirrors
– Concave
– Convex
Ch14 : Light & Reflection
• Lens/Mirror Equations
– f = focal length
– di = image distance
– do = object distance
– hi = image height
– ho = object height
o
i
o
i
io
d
d
h
h
ddf
111
Ch14 : Light & Reflection
• Ray Diagrams…
F C
Normal
i
r
REAL! Op
tix PP
T 02
-09
F
VIRTUAL!
Optix
PPT
02-09
Ch15 : Refraction
• Refraction
– Snell’s Law
rnin
v
cn
ri sinsin
Ch15 : Refraction
• Lens Ray Diagrams (p571)
F 2F F 2F C REAL!
Optix
PPT
02-09
F 2F F 2F C VIRTUAL!
Optix
PPT
02-09
Ch15 : Refraction
• Diverging Lensesesesii
Ch15 : Refraction
• Diverging Lensesesesii
– Can ONLY produce virtual small upright
images
• Just like a convex mirror…
Ch15 : Refraction
• Lens Summary:
Ch15 : Refraction
• TIR – Total Internal Reflection
– Critical Angle yields sin r=1.00
• Rainbows
– Combo of reflection, refraction, TIR
Ch15 : Refraction
Ch15 : Refraction
• Rainbows
Ch15 : Refraction
• Rainbows
– Red on top…
Ch15 : Refraction
• Rainbows
Stolen from the Intertoobs My own backyard…
See the double??
Ch16: Diffraction
• Young’s double slit
sind
Ch16 : Diffraction
• Young’s double slit
– From Class From Class
Ch16 : Diffraction
• Young’s double slit
– Hydrogen – From Class
– Iron – NOT from class…