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General ItemsBreithaupt pages 219 to 239
September 1 st , 2010
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Analogue Micrometer
The micrometer is reading 4.06 0.01 mm
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Analogue Vernier Callipers
The callipers reading is 3.95 0.01 cmNTNU Vernier Applet
http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=52.0http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=52.08/12/2019 As 0 General
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SI Base UnitsPhysical Quantity Unit
Name Symbol Name Symbol
mass m kilogram kg
length x metre m
time t second selectric current I ampere A
temperature interval T kelvin K
amount of substance n mole mol
luminous intensity I candela cd
SI comes from the French Le Systme International d'Units
Symbol cases are significant (e.g. t = time; T = temperature)
http://en.wikipedia.org/wiki/Andr%C3%A9-Marie_Amp%C3%A8rehttp://en.wikipedia.org/wiki/William_Thomson,_1st_Baron_Kelvinhttp://en.wikipedia.org/wiki/William_Thomson,_1st_Baron_Kelvinhttp://en.wikipedia.org/wiki/Andr%C3%A9-Marie_Amp%C3%A8re8/12/2019 As 0 General
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Derived units (examples)Consist of one or more base units multiplied or divided together
quantity symbol (s) unit
area A m2
volume V m3
density D or kg m-3
velocity u or v m s -1
momentum p kg m s -1
acceleration a m s -2
force F kg m s -2
work W kg m 2 s-2
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Some Greek characters used in physicscharacter name use character name use
alpha radioactivity mu micro& muons
beta radioactivity nu neutrinos
gamma radioactivity pi 3.142
& pi mesons delta very small &
finite changes rho density &
resistivity
epsilon emf of cells sigma summation
kappa K mesons tau tau lepton
theta angles phi work function
lambda wavelength& lambda
particle
omega angular speed& resistance
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Multiples and prefixes
multiple prefix symbol examplex 1000
x 1000 000
x 10 9
x 10 12
x 10 15
x 10 18
also, but rarely used: deca = x 10, hecto = x 100
mega
kilo
tera
giga
exa
peta
M
k
T
G
E
P
M
km
THz
GW
Em
P s
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Smaller multiplesmultiple prefix symbol example
10 100 1000
1000 000x 10 -9
x 10 -12
x 10 -15
x 10 -18
Powers of 10 presentation
centi
deci
micro
milli
pico
nano
c
d
m
p
n
cm
dB
V
m A
pF
nC
atto
femto
a
f
a s
f m
http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/index.htmlhttp://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/index.html8/12/2019 As 0 General
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Complete:1. There are 5000 mA in 5A
2. There are 8000 pV in 8 nano volts3. There are 500 m in 0.05 cm4. There are 6 000 000 g in 6 000 kg
5. There are 4 fm in 4 000 am6. There are 5.0 x 10 7 kHz in 50 GHz7. There are 3.6 x 10 6 ms in 1 hour8. There are 0.030 M in 30 k 9. There are 4.0 x 10 28 pC in 40 PC10. There are 60 pA in 0.060 nA
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Mathematical signssign meaning sign meaning
> greater than square root< less than < x > mean value
much greater than < x 2 > mean square value
much less than root mean square value greater than or equal to proportional to less than or equal to finite change
approximately equal to extremely small change not equal to sum of equivalent to infinity
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Internet Links Unit Conversion - meant for KS3 - Fendt
Hidden Pairs Game on Units - by KT - Microsoft WORD Fifty-Fifty Game on Converting Milli, Kilo & Mega - by KT - Microsoft
WORD Hidden Pairs Game on Milli, Kilo & Mega - by KT - Microsoft WORD Hidden Pairs Game on Prefixes - by KT - Microsoft WORD Sequential Puzzle on Energy Size - by KT - Microsoft WORD Sequential Puzzle on Milli, Kilo & Mega order - by KT - Microsoft
WORD Powers of 10 - Goes from 10E-16 to 10E+23 - Science Optics & You A Sense of Scale - falstad Use of vernier callipers - NTNU
http://www.walter-fendt.de/m11e/conversion.htmhttp://www.ktaggart.com/physics/Games/PairsGCSEUnits.dochttp://www.ktaggart.com/physics/Games/SelectionMilliKiloMega.dochttp://www.ktaggart.com/physics/Games/PairsMilliKiloMega.dochttp://www.ktaggart.com/physics/Games/PairsPrefixes.dochttp://www.ktaggart.com/physics/Games/PairsMilliKiloMega.dochttp://www.ktaggart.com/physics/Games/SequenceEnergySize.dochttp://www.ktaggart.com/physics/Games/SequenceMilliKiloMega.dochttp://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/index.htmlhttp://www.falstad.com/scale/http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?t=69http://www.phy.ntnu.edu.tw/ntnujava/viewtopic.php?t=69http://www.falstad.com/scale/http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/index.htmlhttp://www.ktaggart.com/physics/Games/SequenceMilliKiloMega.dochttp://www.ktaggart.com/physics/Games/SequenceEnergySize.dochttp://www.ktaggart.com/physics/Games/PairsMilliKiloMega.dochttp://www.ktaggart.com/physics/Games/PairsPrefixes.dochttp://www.ktaggart.com/physics/Games/PairsPrefixes.dochttp://www.ktaggart.com/physics/Games/PairsMilliKiloMega.dochttp://www.ktaggart.com/physics/Games/SelectionMilliKiloMega.dochttp://www.ktaggart.com/physics/Games/PairsGCSEUnits.dochttp://www.walter-fendt.de/m11e/conversion.htm8/12/2019 As 0 General
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Notes from Breithaupt pages 232 & 236
1. Copy table 1 on page 2322. What is the difference between a base unit anda derived unit? Give five examples of derivedunits.
3. Convert (a) 52 kg into g; (b) 4 m 2 into cm 2; (c)6 m 3 into mm 3 ; (d) 3 kg m -3 into g cm -3
4. How many (a) mg in 1 Mg; (b) Gm in 1 TM; (c)s in 1 ks; (d) fV in 1 nV; am in 1 pm?
5. Copy and learn table 2 on page 2366. Try the summary questions on pages 233 &
237
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