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RE: [PSUBS-MAILIST] Quiz question

To: <personal_submersibles@psubs.org>
Subject: RE: [PSUBS-MAILIST] Quiz question
From: <james@guernseysubmarine.com>
Date: Tue, 26 Feb 2008 10:56:47 -0000
Reply-to: personal_submersibles@psubs.org
Sender: owner-personal_submersibles@psubs.org
Hi Brent/Sean

Thats it!!   The bouyancy brainteasers!   Thanks!

> I knew all the rhymes of information I've been archiving would be of some use some day. So James, what's my prize for being > johnny on the spot?

erm, well, how about i buy you a beer one day if we ever get to meet?

and Sean gets a beer as well for being able to remember the question off by heart!

Thanks guys.

James


----- Original Message -----
From: Brent Hartwig [mailto:brenthartwig@hotmail.com]
To: personal_submersibles@psubs.org
Sent: Tue, 26 Feb 2008 02:08:06 -0800
Subject: RE: [PSUBS-MAILIST] Quiz question

Hello James,
http://www.pbs.org/wgbh/nova/lasalle/buoypool.html

http://www.pbs.org/wgbh/nova/lasalle/buoyancy.html

I knew all the rhymes of information I've been archiving would be of some use some day. So James, what's my prize for being johnny on the spot?


"This should be a piece of cake for people who design/build psubs,right? ;)3 problems involving buoyancy:http://www.pbs.org/wgbh/nova/lasalle/buoyancy.htmlGood Luck!Ian."

Cheers,Brent





[PSUBS-MAILIST] Buoyancy Brainteasers?

From:
owner-personal_submersibles@psubs.org on behalf of Ian Roxborough (irox@ix.netcom.com)

Sent:
Sat 9/22/07 8:23 PM

Reply-to:
personal_submersibles@psubs.org

To:
personal_submersibles@psubs.org

 This should be a piece of cake for people who design/build psubs,right? ;) 3 problems involving buoyancy: http://www.pbs.org/wgbh/nova/lasalle/buoyancy.html Good Luck!Ian.> Date: Mon, 25 Feb 2008 21:01:20 -0800> From: irox@ix.netcom.com> To: personal_submersibles@psubs.org> Subject: Re: [PSUBS-MAILIST] Quiz question> > > I think I might have posted it, but I can't find the email.> > If it turns up I'll pass it a long.> > Cheers,> Ian.> > -----Original Message-----> >From: "Sean T. Stevenson" <cast55@telus.net>> >Sent: Feb 25, 2008 6:23 PM> >To: personal_submersibles@psubs.org> >Subject: Re: [PSUBS-MAILIST] Quiz question> >> >James - I remember what you are talking about: counterintuitive questions> >regarding buoyancy. I don't remember what they were, apart from the one that> >you refer to specifically. > >> >In that one, the level of the lake will fall. If we can assume that the density> >of rock (unspecified) is greater than the density of the lake water, then when> >the rock is in the boat, it displaces a volume of lake water equal to the weight> >of the rock. When the rock is thrown overboard, it sinks to the bottom (i.e.> >its weight is no longer balanced by the buoyancy force), and displaces a volume> >of lake water equal only to the volume of the rock.> >> >-Sean> >> >> >Quoting James Frankland <james@guernseysubmarine.com>:> >> >> Does anyone have a link to those 3 sub related quiz questions that were > >> posted a while back.> >> > >> It was just a few fun questions.> >> > >> There was one with a man sat in a boat on a lake with a large rock in the > >> boat. The question was that if he chucked the rock overboard, did the water> >> > >> in the lake rise or fall?> >> > >> My Dad is doing a quiz for the local yacht club and has asked me for some > >> ideas that might get people thinking. I thought that would be a good one > >> for people.> >> > >> Can anyone remember what i mean?> >> Thanks> >> James > >> > >> > >> > >> > >> ******************************************************************!
 ******!
 > >> ***

*********************************************************************> >> ************************************************************************> >> The personal submersibles mailing list complies with the US Federal> >> CAN-SPAM Act of 2003. Your email address appears in our database> >> because either you, or someone you know, requested you receive messages> >> from our organization.> >> > >> If you want to be removed from this mailing list simply click on the> >> link below or send a blank email message to:> >> removeme-personal_submersibles@psubs.org> >> > >> Removal of your email address from this mailing list occurs by an> >> automated process and should be complete within five minutes of> >> our server receiving your request.> >> > >> PSUBS.ORG> >> PO Box 53> >> Weare, NH 03281> >> 603-529-1100> >> ************************************************************************> >> ************************************************************************> >> ************************************************************************> >> > >> > >> >> >> >> >> >> >> >************************************************************************> >************************************************************************> >************************************************************************> >The personal submersibles mailing list complies with the US Federal> >CAN-SPAM Act of 2003. Your email address appears in our database> >because either you, or someone you know, requested you receive messages> >from our organization.> >> >If you want to be removed from this mailing list simply click on the> >link below or send a blank email message to:> > removeme-personal_submersibles@psubs.org> >> >Removal of your email address from this mailing list occurs by an> >automated process and should be complete within five minutes of> >our server receiving your request.> >> >PSUBS.ORG> >PO Box 53> >Weare, NH 03281> >603-529-1100> >************************************************************************> >*************************!
 ********

***************************************> >************************************************************************> >> > > > > ************************************************************************> ************************************************************************> ************************************************************************> The personal submersibles mailing list complies with the US Federal> CAN-SPAM Act of 2003. Your email address appears in our database> because either you, or someone you know, requested you receive messages> from our organization.> > If you want to be removed from this mailing list simply click on the> link below or send a blank email message to:> removeme-personal_submersibles@psubs.org> > Removal of your email address from this mailing list occurs by an> automated process and should be complete within five minutes of> our server receiving your request.> > PSUBS.ORG> PO Box 53> Weare, NH 03281> 603-529-1100> ************************************************************************> ************************************************************************> ************************************************************************>
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