Aim: An Aim: An Introduction Introduction to Physics to Physics
Aim: An Aim: An Introduction to Introduction to
PhysicsPhysics
Units This YearUnits This Year
Math ReviewMath ReviewKinematicsKinematicsEnergyEnergyElectricityElectricityMagnetismMagnetismWavesWavesLight Light ModernModern
Estimating nearest order of Estimating nearest order of magnitudemagnitude
Human LifespanHuman Lifespan
70 years (round to nearest base 10)70 years (round to nearest base 10)
100 years100 years
101022 years yearsWidth of your fingernailWidth of your fingernail
1 cm (no need to round)1 cm (no need to round)
1010-2-2 m m
Height of a 12 story building (each story is Height of a 12 story building (each story is about 10 meters)about 10 meters)
120 meters120 meters100 meters100 meters
101022 meters meters
UnitsUnitsInternational System of Units (SI)International System of Units (SI)Fundamental SI units:Fundamental SI units:QuantityQuantity SI UnitSI Unit SI symbolSI symbol
MassMass kilogramkilogram kgkg
LengthLength metermeter mm
TimeTime secondsecond ss
Electric CurrentElectric Current ampereampere AA
Amount of Amount of SubstanceSubstance
molemole molmol
TemperatureTemperature kelvinkelvin KK
Derived UnitsDerived Units
time
distancespeed
s
mspeed
Common SI ComparisonsCommon SI Comparisons
Head of a pin = 2 mmHead of a pin = 2 mmWidth of pinky = 1 cmWidth of pinky = 1 cmHeight of doorknob, distance Height of doorknob, distance
between outstretched arms = 1 between outstretched arms = 1 metermeter
Height of 1 story = 10 mHeight of 1 story = 10 m
1 liter of water = 1 kg1 liter of water = 1 kgSmall person = 50 kgSmall person = 50 kgFootball player = 100 kgFootball player = 100 kg
Duration of a heartbeat at rest Duration of a heartbeat at rest = 1 second= 1 second
Current flowing into a computer = 1 Current flowing into a computer = 1 ampamp
Maximum current to household device Maximum current to household device = 10 amps= 10 amps
Water freezes at 273 Kelvin, boils at Water freezes at 273 Kelvin, boils at 373 Kelvin373 Kelvin
Room temperature is about 300 KelvinRoom temperature is about 300 Kelvin12 grams of Carbon-12, or the number 12 grams of Carbon-12, or the number
of carbon atoms in the ‘lead’ of a of carbon atoms in the ‘lead’ of a pencil = 1 molpencil = 1 mol
Pages for Additional ReadingPages for Additional Reading
Page 18-19, 27Page 18-19, 27