Download - Measurement
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MEASUREMENT
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A comparison between a thing of unknown value and a thing of known
value.
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thing of unknown value - the quantity to be
measured
the thing of known value - the measuring
instrument - standard- universally -accepted- consistent
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Types of Quantities
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1. Fundamental or
Basic Quantities2. Derived Quantities
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The Fundamental or Basic Quantities
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- Also called the undefinables
- Form the basis or foundation for the derived quantities
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Length- The length of a thing is the distance between its
ends
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Mass- Quantifies the amount of
matter in the body
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Time- A dimension in which events occur in a sequence, quantifies the duration of events and the
intervals between them.
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The Systems of Measurement/Units
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The Systems of Measurement/Units
1. English
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The Systems of Measurement/Units
1. English2. Metric
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The Systems of Measurement/Units
1. English2. Metric
a) centimeter-gram-second (cgs)
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The Systems of Measurement/Units
1. English2. Metric
a) centimeter-gram-second (cgs)b) meter-kilogram-second (mks)
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The Systems of Measurement/Units
1. English2. Metric
a) centimeter-gram-second (cgs)b) meter-kilogram-second (mks)
3. International System of Units (SI)
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass ounce, pound
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass ounce, pound gram
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass ounce, pound gram kilogram
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass ounce, pound gram kilogram kilogram (kg)
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass ounce, pound gram kilogram kilogram (kg)
time
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass ounce, pound gram kilogram kilogram (kg)
time second, minute, hour
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass ounce, pound gram kilogram kilogram (kg)
time second, minute, hour
second
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass ounce, pound gram kilogram kilogram (kg)
time second, minute, hour
second second
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Table of Units for the Fundamental Quantities
Fundamental Quantity
System of Measurement/Units
English Metric SI
cgs mks
length inch, foot, yard, mile
centimeter meter meter (m)
mass ounce, pound gram kilogram kilogram (kg)
time second, minute, hour
second second second (s)
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• All measurement systems have standards.
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• All measurement systems have standards.
• Standards are exact quantities that everyone agrees to use as a basis of comparison.
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The Derived Quantities
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- Combination of two or more fundamental quantities
- Defined in terms of fundamental
quantities
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Area
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Area= (length)2
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Area= (length)2
m2
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Volume
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Volume= (length)3
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Volume= (length)3
m3
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Density
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Density
mass
volume
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Density
kg m3
mass
volume
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Speed/Velocity
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Speed/Velocity
distance
time
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Speed/Velocity
m s
distance
time
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Acceleration
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Acceleration
velocity
time
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Acceleration
m s2
velocity
time
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Weight
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Weight= (mass)(gravitational
acceleration)
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Weight= (mass)(gravitational
acceleration)
= newton (N)
ms2
kg ·
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Weight= (mass)(gravitational
acceleration)
N
= newton (N)
ms2
kg ·
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Force
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Force= (mass)(acceleration)
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Force= (mass)(acceleration)
= newton (N)
ms2
kg ·
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Force= (mass)(acceleration)
N
= newton (N)
ms2
kg ·
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Work/Energy/Heat
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Work/Energy/Heat= (force)(distance)
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Work/Energy/Heat= (force)(distance)
N·m = joule (J)
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Work/Energy/Heat= (force)(distance)
J
N·m = joule (J)
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Power
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Power
work
time
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Power
Js
work
time
= watt (W)
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Power
Js
work
time
= watt (W)
W
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Pressure
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Pressure
force
area
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Pressure
m2
force
area
= pascal (Pa)
N
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Pressure
m2
force
area
= pascal (Pa)
N
Pa
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The measure with which you measure
will be used to measure you.
- matthew 7:2