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48 Cards in this Set
- Front
- Back
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Base Quantity: Length
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Name of Unit: Meter (m)
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Base Quantity: Mass
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Name of Unit: kilogram (kg)
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Base Quantity: Time
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Name of Unit: second (s)
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Base Quantity: Electrical current
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Name of Unit: ampere (A)
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Base Quantity: Temperature
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Name of Unit: kelvin (K)
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Base Quantity: Amount of substance
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Name of Unit: mole (mol)
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Base Quantity: Luminous intensity
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Name of Unit: candela (cd)
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Mass is a measure of the quantity of matter in an object.
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Define MASS
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Weight is the force that gravity exerts on an object.
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Define WEIGHT
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10^12
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T tera-
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10^9
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G giga-
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10^6
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M mega-
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10^3
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k kilo-
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10^-1
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d deci-
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10^-2
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c centi-
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10^-3
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m milli-
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10^-6
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u micro-
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10^-9
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n nano-
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10^-12
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p pico-
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1 kg = 1000g = 1x10^3gram
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mass
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Volume is length(m)CUBED
1cm^3 = (1x10^-2m)^3 = 1x10^-6m^3 |
volume
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A liter is the volume occupied by one cubic decimeter
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liter
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One liter = 1000 milliliter(L)
mL |
mL
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1 mL = 1 cm^3
One milliliter = one cubic centimeter |
cubic centimeter
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Density is the mass of an object divided by its volume
D = m/v |
define density
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Density is an intensive property. As such, does not depend on teh quantity of mass present. The ratio of density always remains the same for a given material - regardless of quantity.
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density - an intensive property
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SI unit for density is:
kg/m^3 Common unit is grams/milliliter: g/mL (solid and liquid density) |
SI unit for density
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Fahrenheit scale:
freezing is 32F boiling is 212F |
Fahrenheit
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Celsius scale:
freezing is 0C boiling is 100C |
Celcius
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Kelvin scale: the official SI Unit for temperature. Absolute temperature scale.
0K is lowest theoretical temp |
Kelvin scale
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The size of a DEGREE on the Fahrenheit scale
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5/9 of a degree on the Celsius scale
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Formula to convert Fahrenheit degrees to Celsius
?C = (F-32F) x 5/9 |
?C = (F-32F) x 5/9
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Formula to convert Celcius to Fahrenheit
?F = 9/5 x C + 32F |
?F = 9/5 x C + 32F
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T/F:
One degree of Celcius is equal in magnitude to one degree of Kelvin |
true
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What is absolute zero on the Kelvin scale = on the Celsius scale?
-273.15C |
-273.15C
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Convert Celcius to Kelvin:
?K = (C + 273.15C)x 1K/1C |
?K = (C + 273.15C)x1K/1C
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Regardless of magnitude, all numbers can be expressed as:
N x 10^n |
N x 10^n
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Scientific notation:
If the decimal is moved to the left, it is a ____integer. If to right, it is a _____interger |
Left ---positive integer
Right ---negative integer |
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T/F
In significant figures, it is assumed that the last digit is understood to be "uncertain" |
T
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Rules for Significant Digits:
- Any digit not a zero is significant. - Zeros between nonzeros significant. - Zeros to left are NOT significant. - Zeros to right significant - Trailing zeros (after last nonzero digit) may/may not be and needs scientific not. |
significant digit rules
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Add/Sub, answer cannot have more digits to the right of the decimal point than either of original numbers
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T
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Round-off procedure:
- Drop digits if less than 5 - Equal or greater than 5, round up |
T
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Mult/Div: #of signficant figures determined by the original number that has smallest # of signficant figures
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T
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Exact numbers obtained from definitions (eg 1ft = 12 in), or by counting # of objects ---- considered to have an infinite number of significant figures
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T
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Accuracy:
How close a measurement is to the true value of the quantity measured. |
Accuracy
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Precision:
How closely two or more measurements of the same quantity agree with one another. |
Precision
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Dimensional Analysis = Factor Label Method
Uses relationships between different units to express the same physical quantity |
Dimensional analysis
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Grams to Milligrams:
1x10^-3 = 1 mg |
1000 mg = 1 gram
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