## Summary of Topics

Exam #1

Mechanics

Inertia

Acceleration

Force

Gravity, Spring, Normal

Friction                                                           skating

Static, Dynamic                                  anti-lock brakes

Newton’s 3rd Law                                                       rocket car

Momentum                                                                 2 ball collision, baseball bat

Impulse = F*t = Change in momentum          airbags, padding

Angular Momentum

Angular Momentum Conservation                 gyroscope, seasons

Right hand rule

Energy

Kinetic, Gravity, Spring                                 roller coaster, falling ball

Thermal energy                                               bouncing, friction

Circular Motion                                                          car turn, Ferris wheel

Springs

Elasticity, energy                                            bouncing balls, bats

Oscillations

Natural Frequency, Damping                         Tigger, drum, 2 sweet spots

Resonance, Driven Oscillation                        broken glass, bridge collapse,

Swing, clocks

Sound                                                              Musical Instruments, ear,

thunder, speaker

Exam #2

Fluids

Pressure                                                                      bed of nails

Pressure vs. depth                                                      air pressure, water tower

Buoyancy                                                                   floating bowling balls

Floating                                                                       iceberg, Cartesian diver

Barometer                                                                   drinking straw

Hydraulics                                                                  car lift

Moving Fluids

Continuity                                                      hose nozzle, cars on highway

Airplane wing

Bernoulli                                                         aspirator, flying beach ball

Bernoulli, wake deflection                  Airplane wing

Turbulence                                                      tennis ball fuzz, golf ball

Air resistance                                      low, med, high speed ball

Laminer, part Laminer, all turbulent   baseball, stalling wing

Airfoil design                                      Airplane wing

Thermal Physics

Ideal Gas Law (PV=NkT)                              fire syringe, bike pump

Molecular picture

Temperature                                       heat capacity of water

Phase transitions                                 energy in melting, boiling

KE distribution                                   evaporative cooling, vapor pressure

Thermal Transfer

Molecular picture

Conduction                                         what feels cold, copper/stainless pots

Convection                                          forced air heating, windbreaker

Buoyancy                               hot air balloon, convection cell

Sea breeze

Radiation                                             temp of sun & lightbulb,

nightvision goggles

wavelength v temp, intensity v temp

emissivity                               greenhouse effect

heat capacity                                       moderate temp near H2O, sea breeze

Refrigerator                                                     Freon, heat exchanger

4 cycle engine

4 strokes                                             fuel injection, spark plug, fly wheel,

starter motor, turbo charger

Compression ratio                              knocking, octane

Valves                                                 camshaft, crankshaft

Other                                                   Diesel engine, 2 cycle engine

Refrigerator                                                     Freon, heat exchanger

Topics for the rest of the course

Electronics

Charges                                                           +/-, opposites attract, likes repel

Voltage, Electric field, conductors, insulators, force vs distance

Static Electricity, polarization                        static cling, sparks & lightning

Circuits                                                           flashlight, switch

House Wiring                                      grounding, polarized plugs, ground

fault interrupter, fuse/circuit breaker

Power Distribution                             AC/DC, transformers

TV                                                                   Electron Gun, steering, phosphor

Raster scan                                          525 lines, then return, 30 per sec

Color TV                                             3 guns

Light

wavelength spectrum                                      Radio, microwave, infrared, ROY G-

BIV, ultraviolet, x-ray, gamma ray

Wavelength vs. size of object                         size<<wavelength, size>>wvelength

Blue sky, red sunset

White clouds, cell phone reception

Color vision                                                    simple RGB cone model (eg. yellow)

colored object/filters

Light at a surface

Reflection                                            1 way mirror, diamond sparkle

Refraction                                           speed of light in glass, prism colors

total internal reflection                        fiber optic cable, diamond

Lenses

Converging lens                                   parallel light focused to focal point

Image looks real

Eyes

Accommodation                                  near point, range of lens

Near sighted, far sighted