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→‎Individual reactive components: Revert leftovers of 17 Feb 2014. Parallel resonant circuit is confusing when you are talking about series resistance.
 
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It is a well-known truth which females are obsessed and more aware of their body image as compared to men. There are furthermore cases whenever a female goes from phases when she is not cautious about what she consumes plus refuses to observe her weight at all. After pregnancy plus while the girl is breast feeding her baby, she tends to ignore her health and there is moreover a tendency towards over eating. What 1 should remember is the fact that both over-obsession and ignorance towards your wellness will spell doom for we.<br><br>Secondly, you need to consider the build of your body. While all women would like to be considered delicate small flowers, the truth is the fact that females come in every shapes and models, plus a superior weight chart can have separate weight ranges for tiny, medium, plus bigger framed ladies.<br><br>Excessive body fat increases the dangers for a number of major health issues. Body Mass Index is a quick-and-dirty measure of overweight (plus underweight). However it's not the number one quickie way. The Larry Index is a bit more realistic.<br><br>So being the girl I am and having a should understand kind of mind, I found an online [http://safedietplansforwomen.com/bmi-calculator bmi calculator females] plus put in my numbers. After my friend Sally's experience I was sure that mine would at the least state I was at the high-end of usual. Oh but no, my online BMI outcome was which I was underweight. WTF? Again I understand which everyone has their own perception of what exactly is thick plus was is not yet if I were to really judge where I think my weight should fall I would have mentioned average, specifically with the knowledge which Sally's came back on the high-end of overweight.<br><br>In addition, people vary inside how muscular they are. A very muscular person might have low body fat plus nevertheless have a especially excellent BMI. Professional body builders are obese, by this criterion. Arnold Schwarzenegger, inside his prime, was 6'2 and 235 pounds http://www.bodybuildinguniverse.com/arnold.htm; which provides him a BMI of 30.2! There are running backs in American football who are 5'8" or 5'9" and over 200 pounds. Running backs are not fat. Heck, Michael Jordan was 6'6" and 216 pounds - borderline fat per the above mentioned!<br><br>Many sites can boast which is a individual has a high BMI, he or she should lose fat. This is not true plus may occasionally result is serious health dangers. Always consult an actual doctor when you're not sure. Never take the word of the organization struggling to market their product!<br><br>Note: If you don't know the BMI score you will find several free online calculators to help you figure it. One such calculator can be found at: wdxcyber.com/bmi. Remember an perfect BMI score is one between 19 and 24.9. An overweight BMI score is 1 which falls between 25.9 plus 29.9 and anything over 30 is considered obese.
 
[[File:Effusion.svg|thumb|250px|Effusion|The image in the left shows effusion, where the image on the right shows diffusion. Effusion occurs through an orifice smaller than the mean path of the particles in motion where diffusion occurs through an opening in which multiple particles can flow through simultaneously.]]
 
'''Effusion''' is the process in which a gas escapes through a small hole. This occurs if the diameter of the hole is considerably smaller than the [[mean free path]] of the molecules.<ref>K.J. Laidler and J.H. Meiser, Physical Chemistry, Benjamin/Cummings 1982, p.18</ref> According to [[Graham's law]], the rate at which gases effuse (i.e., how many molecules pass through the hole per second) is dependent on their molecular weight. Gases with a higher molecular weight effuse slower than gases with a lower molecular weight; the number of smaller molecules escaping will be greater but the mass of the larger molecules will be greater. For two gases at the same temperature <math>T</math>, and thus having the same kinetic energy,<ref>http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/temper.html</ref> the [[root mean square]] molecular speed, <math>v_{\rm rms}</math>, of each gas can be found using the equation
 
:<math>\frac{3}{2}k_{\rm B} T  = \frac{m}{2} v_{\rm rms}^2</math>
<!-- The average speed would then be about 0.921 ''v''<sub>rms</sub>. -->
where <math>k_{\rm B}</math> is the [[Boltzmann constant]].  Thus, lighter molecules have a higher speed. This results in more molecules passing through the hole per unit time. This is why a balloon filled with low molecular weight [[hydrogen]] deflates faster than an equivalent balloon full of higher molecular weight [[oxygen]].
 
==Application to thermodynamics==
<ref>{{cite book|last=Zumdahl|first=Steven S.|title=Chemical Principles|year=2008|publisher=Houghton Mifflin Harcourt Publishing Company|location=Boston|isbn=978-0-547-19626-8|pages=164}}</ref> Thomas Graham (1805–1869), a Scottish chemist, found experimentally that the rate of effusion of a gas is inversely proportional to the square root of the mass of its particles. In other words, the relative rates of effusion of two gases at the same temperature and pressure are given by the inverse ratio of the square roots of the masses of the gas particles. The equation is given by
 
: <math>{\mbox{Rate of effusion of gas}_1 \over \mbox{Rate of effusion of gas}_2}=\sqrt{M_2 \over M_1}</math>
where <math>M_1</math> and <math>M_2</math> represent the molar masses of the gases.  
This equation is known as [[Graham's law|Graham's law of effusion]].
 
The effusion rate for a gas depends directly on the average velocity of its particles. Thus, the faster the gas particles are moving, the more likely they are to pass through the effusion orifice.
A figure of Graham's law of effusion linked below shows the rate of effusion (the rate at which the gas is transferred across the barrier through the pin hole) is inversely proportional to the square root of the mass of the gas molecules.<ref>[http://img.sparknotes.com/content/testprep/bookimgs/sat2/chemistry/0003/sat117002_0510.gif Effusion of a gas into an evacuated chamber]</ref>
 
==References==
{{reflist}}
 
==External links==
* [http://library.thinkquest.org/12596/graham.html Graham's law]
 
[[Category:Physical chemistry]]
[[Category:Gases]]

Latest revision as of 11:50, 22 December 2014

It is a well-known truth which females are obsessed and more aware of their body image as compared to men. There are furthermore cases whenever a female goes from phases when she is not cautious about what she consumes plus refuses to observe her weight at all. After pregnancy plus while the girl is breast feeding her baby, she tends to ignore her health and there is moreover a tendency towards over eating. What 1 should remember is the fact that both over-obsession and ignorance towards your wellness will spell doom for we.

Secondly, you need to consider the build of your body. While all women would like to be considered delicate small flowers, the truth is the fact that females come in every shapes and models, plus a superior weight chart can have separate weight ranges for tiny, medium, plus bigger framed ladies.

Excessive body fat increases the dangers for a number of major health issues. Body Mass Index is a quick-and-dirty measure of overweight (plus underweight). However it's not the number one quickie way. The Larry Index is a bit more realistic.

So being the girl I am and having a should understand kind of mind, I found an online bmi calculator females plus put in my numbers. After my friend Sally's experience I was sure that mine would at the least state I was at the high-end of usual. Oh but no, my online BMI outcome was which I was underweight. WTF? Again I understand which everyone has their own perception of what exactly is thick plus was is not yet if I were to really judge where I think my weight should fall I would have mentioned average, specifically with the knowledge which Sally's came back on the high-end of overweight.

In addition, people vary inside how muscular they are. A very muscular person might have low body fat plus nevertheless have a especially excellent BMI. Professional body builders are obese, by this criterion. Arnold Schwarzenegger, inside his prime, was 6'2 and 235 pounds http://www.bodybuildinguniverse.com/arnold.htm; which provides him a BMI of 30.2! There are running backs in American football who are 5'8" or 5'9" and over 200 pounds. Running backs are not fat. Heck, Michael Jordan was 6'6" and 216 pounds - borderline fat per the above mentioned!

Many sites can boast which is a individual has a high BMI, he or she should lose fat. This is not true plus may occasionally result is serious health dangers. Always consult an actual doctor when you're not sure. Never take the word of the organization struggling to market their product!

Note: If you don't know the BMI score you will find several free online calculators to help you figure it. One such calculator can be found at: wdxcyber.com/bmi. Remember an perfect BMI score is one between 19 and 24.9. An overweight BMI score is 1 which falls between 25.9 plus 29.9 and anything over 30 is considered obese.

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