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 Kilavoud From , joined Dec 1969, posts, RR: Posted Mon Oct 20 2003 16:56:55 UTC (11 years 5 months 1 week 6 days 3 hours ago) and read 1732 times:

 Hi, your help will be much appreciated for the two following exercises : Exercise 1 The mass of an atom of carbon is evaluated to 1,99 x 10 -26 Kg. Calculate the number of atoms contained in a mg of carbon. Exercise 2 Calculate the number of atoms contained in a gram of iron, knowing that the mass of an atom of iron is evaluated to 9,27 x 10 -26 Kg. - 26 Kg. (- and 26 should be up) Thank you so much and all the best. Kilavoud.
 707cmf From France, joined Mar 2002, 4885 posts, RR: 28 Reply 1, posted Mon Oct 20 2003 17:13:29 UTC (11 years 5 months 1 week 6 days 3 hours ago) and read 1721 times:

 Exercice 1 : 1,99 x 10 -26 Kg = 1,99 x 10 -20 mg N (number of atoms ) = 1/(1,99 x 10 -20) = (roughly) 5.0251 x10 19 Exercice 2 : 9,27 x 10 -26 Kg = 9,27 x 10 -23 g So N = 1 / (9,27 x 10 -23) = 1,0787 x 10 22 Cheers, 707, bored
 777fan From United States of America, joined Jan 2006, 2536 posts, RR: 2 Reply 2, posted Tue Oct 21 2003 20:24:03 UTC (11 years 5 months 1 week 4 days 23 hours ago) and read 1648 times:

 Damn.......I am impressed!
 DC-8 61/63/71 DC-9-30/50 MD-80/82/83 DC-10-10/30 MD-11 717 721/2 732/3/4/5/G/8/9 741/2/4 752 762/3 777 A306/319/20/33 AT
 Superfly From Thailand, joined May 2000, 40284 posts, RR: 74 Reply 3, posted Tue Oct 21 2003 20:27:23 UTC (11 years 5 months 1 week 4 days 23 hours ago) and read 1646 times:

 777fan: Amazing!   Dude if I were you, I quit the Insurance Sales Trainer gig and become an engineer! With those skills you can really rake in the bucks!
 Bring back the Concorde
 Lindy From , joined Dec 1969, posts, RR: Reply 4, posted Tue Oct 21 2003 20:39:36 UTC (11 years 5 months 1 week 4 days 23 hours ago) and read 1641 times:

 Kilavoud, How old is your doughter? I mean what class she's in right now? Rafal
 Superfly From Thailand, joined May 2000, 40284 posts, RR: 74 Reply 5, posted Tue Oct 21 2003 20:48:19 UTC (11 years 5 months 1 week 4 days 23 hours ago) and read 1633 times:

 Lindy: This isn't the best way to meet girls and is a bad 1st impression on a father.
 Bring back the Concorde
 NWA From United States of America, joined Jun 2001, 1200 posts, RR: 3 Reply 6, posted Tue Oct 21 2003 21:17:50 UTC (11 years 5 months 1 week 4 days 22 hours ago) and read 1629 times:

 She is probably in 11th grade. Thats when i did this stuff. Physics & chem
 23 victor, turn right heading 210, maintain 3000 till established, cleared ILS runwy 24.
 FSPilot747 From United States of America, joined Oct 1999, 3599 posts, RR: 12 Reply 7, posted Tue Oct 21 2003 22:47:19 UTC (11 years 5 months 1 week 4 days 21 hours ago) and read 1617 times:

 Yeah sounds like 10th or 11th grade when I did physics and chem too. It's just formulas..plug and chug. FSP
 777fan From United States of America, joined Jan 2006, 2536 posts, RR: 2 Reply 8, posted Tue Oct 21 2003 22:49:06 UTC (11 years 5 months 1 week 4 days 21 hours ago) and read 1615 times:

 God, I cannot remember any of that stuff! No Thanks Superfly! I'll keep my day job!
 DC-8 61/63/71 DC-9-30/50 MD-80/82/83 DC-10-10/30 MD-11 717 721/2 732/3/4/5/G/8/9 741/2/4 752 762/3 777 A306/319/20/33 AT
 Lindy From , joined Dec 1969, posts, RR: Reply 9, posted Tue Oct 21 2003 22:59:59 UTC (11 years 5 months 1 week 4 days 21 hours ago) and read 1610 times:

 I asked what grade she was in because after 707cmf did the math some of you said WOW you should be an engineer hehehe This is only 10/11th grade math.   Rafal
 707cmf From France, joined Mar 2002, 4885 posts, RR: 28 Reply 10, posted Wed Oct 22 2003 11:10:39 UTC (11 years 5 months 1 week 4 days 9 hours ago) and read 1572 times:

 Well, a tad of math/physics currency is usefull when you are a pilot... 707
 Kilavoud From , joined Dec 1969, posts, RR: Reply 11, posted Wed Oct 22 2003 16:28:20 UTC (11 years 5 months 1 week 4 days 3 hours ago) and read 1552 times:

 707cmf From France, joined Mar 2002, 4885 posts, RR: 28 Reply 12, posted Wed Oct 22 2003 16:32:22 UTC (11 years 5 months 1 week 4 days 3 hours ago) and read 1547 times:

 You're welcome   However, just to correct what you said right above : you have (and hopefully pass) the baccalaureat at the end of the terminale year, and usually start university right after (i.e. at 18) 707, Bachelier de 1994 (Bac C)
 Airsicknessbag From Germany, joined Aug 2000, 4723 posts, RR: 33 Reply 13, posted Wed Oct 22 2003 16:42:09 UTC (11 years 5 months 1 week 4 days 3 hours ago) and read 1541 times:

 Hello? This has NOTHING to do with physics/chemistry. It´s a simple division by 1,000,000 in the first case, and by 1000 in the second case. 1.99 x (10 indexed -26) divided by 1,000,000 equals 1.99 x (10 indexed -32) 9.27 x (10 indexed -26) divided by 1000 equals = 9.27 x (10 indexed -29) Just subtract six/three zeroes, i.e. decrease the exponent by six/three. Sorry 707cmf, you have it backwards: by incresing the exponent, you multiplied instead of dividing. Daniel
 Kilavoud From , joined Dec 1969, posts, RR: Reply 14, posted Wed Oct 22 2003 16:49:52 UTC (11 years 5 months 1 week 4 days 3 hours ago) and read 1540 times:

 707cmf , I have done myself my studies in Switzerland with other grades but for my daughter I tink your information is right and I will check again. Where is Elbonia, is it Albania ? Cheers! Kiavoud.
 Kilavoud From , joined Dec 1969, posts, RR: Reply 15, posted Wed Oct 22 2003 16:54:35 UTC (11 years 5 months 1 week 4 days 3 hours ago) and read 1539 times:

 707cmf , I have done myself my studies in Switzerland with other grades but for my daughter I think your information is right and I will check again. Cheers! Kilavoud.
 707cmf From France, joined Mar 2002, 4885 posts, RR: 28 Reply 16, posted Wed Oct 22 2003 17:04:17 UTC (11 years 5 months 1 week 4 days 3 hours ago) and read 1536 times:

 Sorry 707cmf, you have it backwards: by incresing the exponent, you multiplied instead of dividing. I am afraid your calculations are erroneous... The question is "how many atoms per gram ?" (or milligram). Logic tells that the answer will be "a lot", while your answer (1.99 x (10 indexed -32)) is "very few". 707
 707cmf From France, joined Mar 2002, 4885 posts, RR: 28 Reply 17, posted Wed Oct 22 2003 17:05:35 UTC (11 years 5 months 1 week 4 days 3 hours ago) and read 1535 times:

 Where is Elbonia, is it Albania ? Please, no, not that question again... Elbonia is a Presipaute (like Grosland) situated not far from Noudinlesnoyeaux. 707
 Airsicknessbag From Germany, joined Aug 2000, 4723 posts, RR: 33 Reply 18, posted Wed Oct 22 2003 17:20:49 UTC (11 years 5 months 1 week 4 days 2 hours ago) and read 1526 times:

 You´re right, 707cmf. I misread the question. (But it still is a rather easy task: two equations with one unknown X - once one has stripped it off the atoms frills and stuff). Daniel
 Kilavoud From , joined Dec 1969, posts, RR: Reply 19, posted Wed Oct 22 2003 18:35:15 UTC (11 years 5 months 1 week 4 days 1 hour ago) and read 1511 times:

 Thanks Airsicknessbag, now that everything has been put in in order, I better understand the answer to the problem. Excuse me 707 cmf for my asking about Elbonia, in fact it was by error that I have sent my reply including that question. Without a doubt I will have to revise myself my maths to better come to my daugther's help in future. Cheers. Kilavoud.
 Galaxy5 From United States of America, joined Mar 2000, 2034 posts, RR: 24 Reply 20, posted Wed Oct 22 2003 19:20:27 UTC (11 years 5 months 1 week 4 days ago) and read 1507 times:

 Here's an easy one for you: If it was 30 degrees (F) out yesterday and it's twice as cold today, what's the temperature?
 "damn, I didnt know prince could Ball like that" - Charlie Murphy
 Kilavoud From , joined Dec 1969, posts, RR: Reply 21, posted Wed Oct 22 2003 19:40:46 UTC (11 years 5 months 1 week 4 days ago) and read 1499 times:

 Hi Galaxy5 As simple as this : 30 degrees F = -1,111 degreesC -1,111 degrees C x 2 = -2,222 degrees C -2,222 degrees C = 28 degrees F The answer is 28 degrees F Cheers. Kilavoud.
 707cmf From France, joined Mar 2002, 4885 posts, RR: 28 Reply 22, posted Wed Oct 22 2003 20:46:41 UTC (11 years 5 months 1 week 3 days 23 hours ago) and read 1493 times:

 You´re right, 707cmf. I misread the question. (But it still is a rather easy task: two equations with one unknown X - once one has stripped it off the atoms frills and stuff). Well, I never said it was difficult   It is actually exactly as if we were asked "a plane flies at 800km/h, and the flight duration is 2h30minuts, what is the distance ?" If it was 30 degrees (F) out yesterday and it's twice as cold today, what's the temperature? Ah, the temperature problem. I would use Kelvin.. 30 deg F = 272K -> today is 136K = -214 F... 707
 777236ER From , joined Dec 1969, posts, RR: Reply 23, posted Wed Oct 22 2003 22:17:33 UTC (11 years 5 months 1 week 3 days 21 hours ago) and read 1480 times:

 God, bloody Europeans. Trust them to cock it up and make a Brit get the right answer. 30 deg F = 489.67 Rankine. Today is 244.84 Rankine = -214.83 deg F. Brrr...
 707cmf From France, joined Mar 2002, 4885 posts, RR: 28 Reply 24, posted Thu Oct 23 2003 00:01:13 UTC (11 years 5 months 1 week 3 days 20 hours ago) and read 1457 times:

 Well, also I'd have preffered a 7772B3-ER... we seem to agree together ! 707
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