Sponsor Message:
Non Aviation Forum
My Starred Topics | Profile | New Topic | Forum Index | Help | Search 
Please Help For Some Mathematics For My Daughter  
User currently offlineKilavoud From , joined Dec 1969, posts, RR:
Posted (10 years 10 months 2 weeks 3 days 1 hour ago) and read 1518 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.


24 replies: All unread, jump to last
 
User currently offline707cmf From France, joined Mar 2002, 4885 posts, RR: 29
Reply 1, posted (10 years 10 months 2 weeks 3 days 1 hour ago) and read 1507 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


User currently offline777fan From United States of America, joined Jan 2006, 2496 posts, RR: 2
Reply 2, posted (10 years 10 months 2 weeks 1 day 22 hours ago) and read 1434 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
User currently offlineSuperfly From Thailand, joined May 2000, 39854 posts, RR: 74
Reply 3, posted (10 years 10 months 2 weeks 1 day 22 hours ago) and read 1432 times:

777fan:
Amazing!  Big thumbs up

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!  Smokin cool



Bring back the Concorde
User currently offlineLindy From , joined Dec 1969, posts, RR:
Reply 4, posted (10 years 10 months 2 weeks 1 day 21 hours ago) and read 1427 times:

Kilavoud,

How old is your doughter? I mean what class she's in right now?

Rafal


User currently offlineSuperfly From Thailand, joined May 2000, 39854 posts, RR: 74
Reply 5, posted (10 years 10 months 2 weeks 1 day 21 hours ago) and read 1419 times:

Lindy:
This isn't the best way to meet girls and is a bad 1st impression on a father.  Big grin



Bring back the Concorde
User currently offlineNWA From United States of America, joined Jun 2001, 1200 posts, RR: 3
Reply 6, posted (10 years 10 months 2 weeks 1 day 21 hours ago) and read 1415 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.
User currently offlineFSPilot747 From United States of America, joined Oct 1999, 3599 posts, RR: 12
Reply 7, posted (10 years 10 months 2 weeks 1 day 19 hours ago) and read 1403 times:

Yeah sounds like 10th or 11th grade when I did physics and chem too. It's just formulas..plug and chug.


FSP


User currently offline777fan From United States of America, joined Jan 2006, 2496 posts, RR: 2
Reply 8, posted (10 years 10 months 2 weeks 1 day 19 hours ago) and read 1401 times:

God, I cannot remember any of that stuff!

No Thanks Superfly! I'll keep my day job!  Big thumbs up



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
User currently offlineLindy From , joined Dec 1969, posts, RR:
Reply 9, posted (10 years 10 months 2 weeks 1 day 19 hours ago) and read 1396 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.

 Smile
Rafal


User currently offline707cmf From France, joined Mar 2002, 4885 posts, RR: 29
Reply 10, posted (10 years 10 months 2 weeks 1 day 7 hours ago) and read 1358 times:

Well, a tad of math/physics currency is usefull when you are a pilot...

707


User currently offlineKilavoud From , joined Dec 1969, posts, RR:
Reply 11, posted (10 years 10 months 2 weeks 1 day 2 hours ago) and read 1338 times:

Hi 707cmf - Thank you very much for your nice help.

Hi Lindy - My daughter is 13 years old and she is in the 4th grade of the Lycée Français of Pondicherry (southern India) a French School, under French Administration with the same teaching, material and staff as in France, with about 1,200 students, mostly Indians and Indian-born French citizens. Both my daughters (13 + 7), my wife and myself are Swiss citizens. Pondicherry was a French colony up to 1956, and after it has been surrendered to India, it has still kept a French town hall, school, etc. It is a nice place to live, with big and nice beaches, in a tropical area at the Bay of Bengal..

As I do not know to which grade the French 4th grade corresponds in the States, I give you below some details regarding the French School , which may help you :

Age from 03 to 04 - Maternelle, petite section (Nursery school- little course)
Age from 04 to 05 - Maternelle, moyenne section (Nursery school- middle course)
Age from 05 to 06 - Maternelle, petite section (nursery school- high course)
Age from 06 to 07 – CP - Cours préparatoire (Preliminary class)
Age from 07 to 08 - CE1 – Cours élémentaire 1 ( Basic 1)
Age from 08 to 09 – CE2 – Cours élémentaire 2 ( Basic 2)
Age from 09 to 10 - CM1 – Cours Moyen 1 (Middle 1)
Age from 10 to 11 - CM2 – Cours Moyen 2 (Middle 2)

(From Age 11 to Age 17, the grades are counted down)
Age from 11 to 12 – 6ème ( 6th grade)
Age from 12 to 13 – 5ème ( 5th grade)
Age from 13 to 14 – 4ème ( 4th grade)
Age from 14 to 15 – 3ème ( 3rd grade)
Age from 15 to 16 – 2ème ( 2nd grade)
Age from 16 to 17 – 1ère ( 1st grade)

Age from 17 to 18 - terminale (final year)
Age from 18 to 19 - baccalauréat (high school diploma)
Age from 19 to ?? - start university


When my daughters will be 19 years old, they will have the possibility to continue their studies at the University of Lausanne, my native place located at the Geneva Lake, in the French speaking part of Switzerland, or to do it in English in India or elsewhere.

For family reasons I live myself in India in February, April, June, August, October, December and for professional reasons in Switzerland the six other months of the year. As we have a house in India and an apartment in Switzerland, I feel in both places at home. I appreciate to change every month of climate and culture, and to have one place for my family life and another place for my working life.
And to have to work only 6 months on 12 a year is just great. I enjoy both my family life in India and my colleagues from work in Switzerland and this way of living alternately is never boring. Every year I fly 2 times with LH GVA-FRA-MAA(Madras)-FRA-GVA and 4 times with SQ ZRH-SIN-MAA-SIN-ZRH and let me tell you that it is fantastic to stopover in Singapore and discover other cultures, like Chinese and Malay cultures.

When I will be retired I like to come for some holiday in the States with ma family.

All the best. Kilavoud.


User currently offline707cmf From France, joined Mar 2002, 4885 posts, RR: 29
Reply 12, posted (10 years 10 months 2 weeks 1 day 2 hours ago) and read 1333 times:

You're welcome  Smile/happy/getting dizzy

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)


User currently offlineAirsicknessbag From Germany, joined Aug 2000, 4723 posts, RR: 34
Reply 13, posted (10 years 10 months 2 weeks 1 day 1 hour ago) and read 1327 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 Smile





User currently offlineKilavoud From , joined Dec 1969, posts, RR:
Reply 14, posted (10 years 10 months 2 weeks 1 day 1 hour ago) and read 1326 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.


User currently offlineKilavoud From , joined Dec 1969, posts, RR:
Reply 15, posted (10 years 10 months 2 weeks 1 day 1 hour ago) and read 1325 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.


User currently offline707cmf From France, joined Mar 2002, 4885 posts, RR: 29
Reply 16, posted (10 years 10 months 2 weeks 1 day 1 hour ago) and read 1322 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


User currently offline707cmf From France, joined Mar 2002, 4885 posts, RR: 29
Reply 17, posted (10 years 10 months 2 weeks 1 day 1 hour ago) and read 1321 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


User currently offlineAirsicknessbag From Germany, joined Aug 2000, 4723 posts, RR: 34
Reply 18, posted (10 years 10 months 2 weeks 1 day 1 hour ago) and read 1312 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 Smile


User currently offlineKilavoud From , joined Dec 1969, posts, RR:
Reply 19, posted (10 years 10 months 2 weeks 1 day ago) and read 1297 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.


User currently offlineGalaxy5 From United States of America, joined Mar 2000, 2034 posts, RR: 24
Reply 20, posted (10 years 10 months 2 weeks 23 hours ago) and read 1293 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
User currently offlineKilavoud From , joined Dec 1969, posts, RR:
Reply 21, posted (10 years 10 months 2 weeks 22 hours ago) and read 1285 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.


User currently offline707cmf From France, joined Mar 2002, 4885 posts, RR: 29
Reply 22, posted (10 years 10 months 2 weeks 21 hours ago) and read 1279 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  Wink/being sarcastic
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


User currently offline777236ER From , joined Dec 1969, posts, RR:
Reply 23, posted (10 years 10 months 2 weeks 20 hours ago) and read 1266 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...


User currently offline707cmf From France, joined Mar 2002, 4885 posts, RR: 29
Reply 24, posted (10 years 10 months 2 weeks 18 hours ago) and read 1243 times:

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

707


Top Of Page
Forum Index

This topic is archived and can not be replied to any more.

Printer friendly format

Similar topics:More similar topics...
Need Help With A Name For My Business posted Thu Sep 28 2006 22:22:43 by B727
Please Help With A 25th Ann. Speech For Parents! posted Sat Jul 15 2006 07:12:41 by Mdsh00
Ten Rules For Dating My Daughter posted Thu Dec 15 2005 22:04:17 by BR076
10 Simple Rules For Dating My Daughter posted Mon Nov 15 2004 23:50:25 by BCAInfoSys
Please Help For Three Sentences In English posted Thu Sep 16 2004 22:27:27 by Kilavoud
My Computer Seems To Be Interesting For Some Guys posted Mon Mar 29 2004 18:35:24 by Sabena332
Please Help For Business English (2 Or 3 Words) posted Fri Mar 12 2004 16:01:22 by Kilavoud
Please Help Again For American English posted Thu Feb 5 2004 20:23:15 by Kilavoud
Need Help For SCHOOL, Please Help Me posted Fri Feb 8 2002 03:43:22 by 767-332ER
Time For Some Fun! posted Thu Aug 3 2006 11:01:24 by ABfemme