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Physic Unit
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by vincentyuahyu90
on 2007-10-27 21:41:23
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| Here's a siple question. I wanted to know the arrangement of unit in physic. For example, the unit for mass kg, times energy joule and divided by time second. then, which of the arrangement goes first? is it the alphebetical order? or the divided value goes first? |
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Re: Physic Unit
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by SuicidopoliS
on 2007-10-28 04:38:09
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Personally, i'd say it doesn't really matter... Even if in this case, i'd definitely go for "kg/J.s", and would indeed probably frown my eyes if i saw "kg/s.J", because it just feels wrong. So yes, maybe alphabetically, but quite frankly, i don't think there's any real rule for it. I think it relies mostly on a sense of aesthetics and "elegance", which is something you get from working with Physics a lot, rather then given by some rule. But again, there's nothing wrong per sé with "kg/s.J". .oO° Life's THE CURE, the rest are details! °Oo. |
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Re: Physic Unit
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by
on 2007-10-28 05:04:23 |
Usually the order of units is followed by the arrangement of how the calculation is done in the formula.  A friend of today is an enemy of tomorrow. I am an empty shell. I don't feel loved at all |
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Re: Physic Unit
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by
on 2007-10-28 09:59:56 (edited 2007-10-28 10:01:23)
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i think it is kg.J/s and usually divided values is always the last one and the timed values is first... it will make confusion when reading it, if it is reversed... except if you use the power of minus one... well but it is still hard to read... so stick with times first and all divided value last (all units with positive powers comes first and with negative comes last) and another thing is that commonly people use kg comes first followed by metres and seconds for example: kg.m.s J.K/kgms  |
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Re: Physic Unit
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by
 
on 2007-10-28 11:09:37 |
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I believe it doesn't matter unless your teacher is super anal about these things. I would put that unit you mentioned as kgJ/s cause normally I see the mass placed first. Besides I think it's weird to say Joules kilograms over seconds rather than kilograms joules over seconds.  |
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Re: Physic Unit
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by SuicidopoliS
on 2007-10-28 12:40:20 (edited 2007-10-28 12:42:05)
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i think it is kg.J/s Woops, yeah, you're right, i misread the original post! Shame on me... .oO° Life's THE CURE, the rest are details! °Oo. |
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Re: Physic Unit
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Your question is (kg x J)/s then it answer should become this; kg.J/s (^_^)
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Re: Physic Unit
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by
on 2008-07-08 13:25:01 |
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kg.J/s is the way they write it in my college engineering courses, so I'd assume that's the correct way. (Technically couldn't this also be called a kilogram Watt? I find that idea somewhat amusing.)
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Re: Physic Unit
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by gundamgeneral
on 2008-07-09 03:03:38 (edited 2008-07-09 03:04:31)
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kg(J)/s 1 joule = 1 newton metre = 1 watt per second ...
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Re: Physic Unit
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| You know...you go with the order that you multiply by or diveded by..... |
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Re: Physic Unit
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by
 
on 2009-02-06 01:12:17 |
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I think you should follow the 'BODMAS' rule.Somebody correct me if I'm wrong. B → Bracket first.(solve equations in bracket first) O → Otherwise if no brackets. D → Division first M → Multiplication next A → Addition next. S → Subtraction.     |
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Re: Physic Unit
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by
on 2009-04-01 12:46:54 |
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it would be easier if you include all the units of the values in your equation. the arrangement of the units will come as you arrive at your final answer. |
