Quantities factor units
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Transcript of Quantities factor units
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Quantities factorunits
Quantities and Units
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Quantity
• Subject / measureable
• First two columns from binas table 6
Quantity and unit
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Quantity examples
• Speed v• Volume V• Time t• Temperature T• Force F• Frequency f
Grootheid en eenheid
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Think about:
capital letters and small letters!!!!!!
Quantity and unit
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Unit
• Size / is behind the number
• Where do you put the number
• Last two columns from Binas table 6
20 drops of water makes about 1 milliliter
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Unit
• 5 drops water is about 1 mL
20 drops of water makes about 1 milliliter
1 theespoon with water is about 5 mL
1 can with water is 1 L
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Unit
1 paperclip is about 1 g
a Citroen 2CV is 560 kg
Peugeot 407 SW is 1476 kg
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Metric mathematics
Factor
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Metric mathematics
Factor
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Metric mathematics
• Letters to make numbers easier to write• See binas table 3 for value and abbreviation
(letter)• The letter comes before the factor!
• milli m x 1/1000• Kilo k x1000
Factor
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What is scientific
Numbers above 10 you say are “to the power of….”
The number indicates the number of zeros after the one.
Metriek
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Metric mathematics
Factor
• Now we can also write the metric system scientifically.
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Metric mathematics
Factor
• micro μ 0,000001 • milli m 0,001 • centi c 0,01• deci d 0,1 • 1 • deca da 10 • hecto h 100• kilo k 1.000 • Mega M 1.000.000
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Metric mathematicsFactor
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Why scientific
Factor
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What do you writeQuantity is number factor unit
s = 10 k ms = 10 d ms = 10 c ms = 10 m ms = 10 μ m
Factor
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What does it mean
Quantity is number ● factor unit
s = 10 (k) ms = 10 (d) ms = 10 c) ms = 10 (m) ms = 10 (μ) m
Factor
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Quantity = number ● factor unit
• m = 10 mg = 10 ● g = 0,01 g
• t = 10 ms = 10 ● s = 0,01 s
• s = 10 km = 10 ● m = 10.000 m
Grootheid, Factor en Eenheid
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What does it meanSee binas table 3 for the factor
Quantity is number ● factor unit
m = 10 k gm = 10 () gm = 10.000 gt = 10 μ st = 10 () st = 0.00001 s
Factor
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Steps of 10 m c d _ da h k
Steps of 1000 n µ m _ k M G
2 kinds of rows Point and right → Point and left
Factor