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Gajjii
14-12-2005, 09:40
My faith in the UK education system has been damaged due to the gullible tw4ts on Space Cadet (assuming its not a con by C4)

Question:

Lunch is served at 12:30 on an aircraft (flying at 25000ft), by 13:00 all the passengers (175 of them) have consumed a cheese & Ham sandwich, a small glass of wine, a packet of crisps and a cup of coffee.

What happens to the resultant weight of the aircraft during the next half hour:

a) It gets heavier, but too small to measure.
b) It gets a lot heavier (measurable).
c) The weight remains constant
d) It gets lighter, but too small to measure.
e) It gets a lot lighter (measurable).
f) I have no Idea, I'm american and don't know what crisps are.

Please provide a reason with your answer.

I'll give you the answer tomorrow.

rustyboxx
14-12-2005, 09:45
It gets lighter but only because it has burned up 30 minutes worth of fuel. The transferring of of food from one receptacle to another would have no effect on the weight of the plane while those receptacles are still contained within it.

Gajjii
14-12-2005, 09:52
:(
Ah well, thought I might get a few people before someone thought about the fuel.

Confused
14-12-2005, 09:53
How much food was consumed makes absolutely no difference, and is thrown in to confuse people and move them away from the correct answer, which is that the plane has got lighter due to the fuel that has been burnt by flying for 30 minutes.


Edit: Seems myself and rusty had the same thoughts! Typical that I didn't get first post, I was too slow in typing!

2Fast
14-12-2005, 10:18
phew, I thought lighter due to fuel and was relieved when it was confirmed by reading the response.
It seems we're not all as stupendously thick as the cadets and i still think it's a fix and the jokes on the viewing public.

James
14-12-2005, 10:38
why did the simulator break down then? maybe a clever ploy to throw us off?

2Fast
14-12-2005, 10:45
Maybe the simulator was built by the Ruskies ;)

Enforcer
14-12-2005, 14:10
Pop that one on MP3car and see what replies we get from an international forum. :)

James
14-12-2005, 14:15
answer F all round...

Gajjii
14-12-2005, 16:29
Pop that one on MP£car and see what replies we get from an international forum.

Watch for it later, perhaps I should do it as a poll. ;)

Do you think I should add this link to it for our american cousins? (http://walkers.corpex.com/cr15p5/products.asp?snacktypeid=26)

Enforcer
14-12-2005, 16:52
naw, just post a picture of Gary Linekar ;)

2Fast
14-12-2005, 16:57
naw, just post a picture of Gary Linekar ;)
But they'd need a widescreen monitor to see it properly :razz:
(cue tumbleweed)

2Fast
14-12-2005, 16:58
http://i23.photobucket.com/albums/b382/AndyA-UK/tumbleweed.gif

Enforcer
14-12-2005, 17:02
http://www.xetronic.com/xettieboard/smiley/whistling.gif

rustyboxx
14-12-2005, 18:07
:lol: @ http://www.buzzlife.com/forums/images/smilies/dance.gif

Gajjii
14-12-2005, 19:21
Poll now open on MP£car

http://www.mp3car.com/vbulletin/showthread.php?t=65421

got one already :-)

only 16% getting right answer.....and dropping

Gajjii
14-12-2005, 20:16
Damm they've sussed it.

They are up to 30% now :(

Enforcer
14-12-2005, 20:58
Helped by rusty and 2fast :rolleyes:


but hey you caught frodo out. :D

2Fast
14-12-2005, 21:07
;)

markbuts3
15-12-2005, 08:40
Did you notice who voted correctly on there first ?? :p And I didn't see this thread first before you say that....

Hope you like my latest post on there :)

Gajjii
15-12-2005, 09:44
sorry haven't read it, can't get MP3car at work :(
Congrats on getting right though.

Its amazing how seriously some people have got about it.

Thought the 'this isnt a science question' comment was great,
only to be outdone by "I'm not taking part in your stuipd poll" post.

Think they need to cut down on the sugary stuff. :D

People still got the wrong answer even after posts pointing out the trick question part. :confused:
A little bit of miss direction goes a long way.

Call it a science question, people expect a science question.
State some irelavent facts and make it appear that its an important part of the question.
Use the term 'weight' (which as someone pointed out is incorrect) to make you consentrate on the food injestion. Say 'mass' and you'll think about the aircraft more.

Cut out the un-necessary parts of the question & your left with:

"Question:

Lunch is served at 12:30 on an aircraft (flying at 25000ft), by 13:00 all the passengers (175 of them) have consumed a cheese & Ham sandwich, a small glass of wine, a packet of crisps and a cup of coffee.
What happens to the resultant weight mass of the aircraft during the next half hour: "

If you ever get conned, don't feel too bad about yourself, you won't be alone.

Lum
15-12-2005, 12:43
The above post is right, it's really easy to confuse people like this, it's like the maths one.

You're driving a bus, you leave the depot at 9AM in the morning and at the first stop 7 old ladies get on
At the next stop 3 of the old ladies get off and 5 more people get on...
(repeat ad infinitum for about 10-15 minutes)
...at the bus station at lunch time, 4 people get off.
What was the drivers name?

Though this puzzle (http://crux.baker.edu/cdavis09/roses.html) is my favourite puzzle for annoying intelligent people. It seems the smarter someone is the longer it takes them to get it.

2Fast
15-12-2005, 13:01
Though this puzzle (http://crux.baker.edu/cdavis09/roses.html) is my favourite puzzle for annoying intelligent people. It seems the smarter someone is the longer it takes them to get it.
I read the instructions, put the number in and got it right, and i bet it takes some people ages to suss it out so according to the write up, i must be thick :p

Confused
15-12-2005, 13:16
I was on the right track to start with, but missed out one important thing for a couple of minutes, then it twigged and I was like "oh ffs, so easy!"

There's also a Polar bear/fish/plankton one http://www.binaryelysium.com/game/bear.php

nigelf
15-12-2005, 22:38
bugger took me 2 hours! well in between work is my excuse!

Gajjii
15-12-2005, 23:21
So what happens if we don't consider the fuel?
Cabin air is supplied from the engine compressors via intercoolers, this is mixed 50-50 with existing cabin air. As outside air enters some of the existing air is exhausted to atmosphere. i.e. not a closed system.Full description here. (http://www.boeing.com/commercial/cabinair/ventilation.pdf)
Injestion of food causes the aircraft total mass to increase (slightly) due to the small quantities of air swallowed with each mouth full, air inside the passengers cannot be vented.
Over the next half hour, this air is gradually released. The solid food is converted to liquid & some more gasses, which are also vented by the passengers, farting, burping & sweating (the extra gases leave the aircraft). Also, during this time, the body is using energy, converting yet more of your mass into other forms of enegry (heat, movement).
Multiply this by 175 passengers (obviously there are 5-8 crew as well, and an air marshall in the US)

At rest, you burn about 1.5 calories per minute.
1.5*30minutes=45
45*175 passengers=7875 in calories.

Which equates to around 525 tsp of sugar
Which would weigh around 4 pounds and thats before thinking about the vented gasses.

So the answer should remain the same, the aircraft gets measurably lighter.

Crap, got carried away then:shock: