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Help Urgent SI Units and Prefixes

01/07/2019 4:12 PM

Help last bit to do but stuck
DOing si units and prefixs
temperature and time last to do
i know si units of them are Kelvin and Seconds
I have to show there equation how got the derived equation
there prefixs and si units
i dont think these have prefixs or equations there derived from so dont know what to do
or do they have these
or what they are derived from

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#1

Re: Help urgent Si units and Prefixs

01/07/2019 4:52 PM
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#2
In reply to #1

Re: Help urgent Si units and Prefixs

01/07/2019 5:05 PM

so not getting it

so kelvin has prefix like mili or kilo kelvin

but it has no equation to derive its si units same as seconds

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#3
In reply to #2

Re: Help urgent Si units and Prefixs

01/07/2019 5:33 PM

..."Until 2018, the kelvin was defined as the fraction ​1273.16 of the thermodynamic temperature of the triple point of water (exactly 0.01 °C or 32.018 °F).[1] In other words, it was defined such that the triple point of water is exactly 273.16 K."...

http://www.amamanualofstyle.com/page/si-conversion-calculator

https://www.metric-conversions.org/temperature/fahrenheit-to-kelvin.htm?val=100

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#4
In reply to #2

Re: Help urgent Si units and Prefixs

01/07/2019 5:39 PM

Every item in SolarEagle's posting #1 table is a "prefix". Every one of them is used like the word "dozen" when you have a dozen eggs.

Not a single item in SolarEagle's posting #1 table is a "SI unit". They do not have SI units and you will continue to be confused if you try to derive "kelvins" or "seconds" from them.

You could have a 1 dozen eggs, 2 dozen carrots or 3 dozen greeting cards. The word "dozen" modifies the number but has nothing to do with the units (eggs, carrots or greeting cards).

Your problem is easier than you think. You just need to somehow get past the confusion.

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#7
In reply to #4

Re: Help urgent Si units and Prefixs

01/07/2019 6:19 PM

so e.g

i could have

kilo seconds

kilo kelvin

or mili seconds

or mili kelvin

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#8
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Re: Help urgent Si units and Prefixs

01/07/2019 6:42 PM
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#9
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Re: Help urgent Si units and Prefixs

01/07/2019 6:54 PM

In practice, I've never seen kilo, mega, or giga, etc., used for seconds or Kelvin. You will see milli, micro, nano, etc., used with these units.

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#10
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Re: Help urgent Si units and Prefixs

01/08/2019 4:11 AM

You don't see it with seconds because it becomes minutes, hours....decades.

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#11
In reply to #9

Re: Help urgent Si units and Prefixs

01/08/2019 5:28 AM
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#12
In reply to #2

Re: Help urgent Si units and Prefixs

01/08/2019 12:16 PM

That's surprising, as the Wikipedia pages generally cover their subjects well and also provide links to other topics from which further information might be gleaned in an aid to detailed understanding. Also, being on-line and available globally, they satisfy the currently-undefined term <..urgent...>.

The units "millikelvin" and "kilokelvin are not in general use. Fractions of a temperature degree are not terribly useful things in the process industries and once temperatures get a little into four figures most everyday things start to melt, boil, burn and even turn to plasma (these terms can be looked up in Wikipedia as well). Five figures and upwards are generally the domain of the nuclear scientist, into which category the originally posted question cannot be realistically inserted.

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#6
In reply to #1

Re: Help urgent Si units and Prefixs

01/07/2019 6:07 PM

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#5

Re: Help urgent Si units and Prefixs

01/07/2019 6:02 PM

Don't you just hate it when you put off homework until the last second and then can't find that girl with all the answers.

Numerical Prefixes

Numeral prefix - Wikipedia

Numerical Prefixes | learning number prefixes

Now, do your homework!

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