Transcript PPTX Interactive Format

Da DaVinci Coke
Or, HONORS Fizzix MidTerm Exam Review
2014 TAYLOR SUPLEMENT
Chapters 12-16
Ch12 : Waves
• Hooke’s Law
FR  kx
– FR is restoring force in spring
– k is ‘spring constant’
– x is displacement stretched or
compressed
Ch 12 : Waves
•
Pendulums (Pendulae?)
– KEMAx = PEMAX
– Diagram p445
L
T  2
g
Ch12 : Waves
•
•
•
•
Amplitude
Period
Frequency
Mass on spring
1
f 
T
m
T  2
k
Ch12 : Waves
•
Types of Waves
– Transverse
– Longitudinal
Ch 12 : Waves
•
Wave speed
d
v
t
v

T
 f
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
P
I
A
P
I
2
4r
Ch13 : Sound
•
Relative Intensity (Decibels!)
I
  10 log
Io
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
v
fn  n
2L
Ch13 : Sound
Open & Closed tubes (Instruments)
Closed
L=¼ 
Open
L=½ 
•
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
1
1 1


f do di
hi
di

ho
do
Ch14 : Light & Reflection
•
Ray Diagrams…
Optix PPT 02-09
REAL!
i
r
C
F
Normal
C
F
VIRTUAL!
Optix PPT 02-09
F
VIRTUAL!
Ch15 : Refraction
•
Refraction
– Snell’s Law
c
n
v
ni sin i  nr sin r
Ch15 : Refraction
•
Lens Ray Diagrams (p571)
Optix PPT 02-09
2F
REAL!
F
C
F
2F
Optix PPT 02-09
VIRTUAL!
2F
F
C
F
2F
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…
Stolen from the Intertoobs
Ch15 : Refraction
•
Rainbows
My own backyard…
See the double??
Ch16: Diffraction
•
Young’s double slit
  d sin 
Ch16 : Diffraction
•
Young’s double slit
– From Class
From Class
Ch16 : Diffraction
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Young’s double slit
– Hydrogen – From Class
– Iron – NOT from class…