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 C

VIRTUAL!

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…