Martin. I am trying to educate Americans, not split hairs. Would it be
better to rephrase the question with all that hair-splitting detail?
Surely they would fall asleep! How would you more accurately ask the
question?
----- Message from Martin Vlietstra <vliets...@btinternet.com> ---------
Date: Thu, 27 Mar 2014 20:46:54 -0000
From: Martin Vlietstra <vliets...@btinternet.com>
Reply-To: vliets...@btinternet.com
Subject: [USMA:53650] RE: SI Trivia Survey B
To: "U.S. Metric Association" <usma@colostate.edu>
Hi David,
I wish to dispute the answer to the first question. According to
Wikipedia
(https://en.wikipedia.org/wiki/Density_of_water#Density_of_water_and_ice),
water at 4 °C has a mass of 0.99970 kg. As it either gets hotter or
colder, it expands, making a litre of water less than 0.99970 kg.
Moreover, if the weighing is done in air, then then the gold
displaces less air than water (it is more dense), so, by Archimedes
principle, the water receives a greater upthrust due to buoyancy in
air than does the gold.
Therefore, a kilogram of gold weighs [very slightly] more than a
litre of water.
Regards
Martin
-----Original Message-----
From: owner-u...@colostate.edu [mailto:owner-u...@colostate.edu] On
Behalf Of cont...@metricpioneer.com
Sent: 27 March 2014 17:22
To: U.S. Metric Association
Subject: [USMA:53649] SI Trivia Survey B
Second one in a series: SI Trivia Survey B: https://t.co/Vvex57DK6L
David Pearl www.MetricPioneer.com 503-428-4917 David Pearl
MetricPioneer.com 503-428-4917
----- End message from Martin Vlietstra <vliets...@btinternet.com> -----
David Pearl MetricPioneer.com 503-428-4917
