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Au vs Pb (Posted on 2013-08-01) Difficulty: 4 of 5
What solid bar weighs more: 18 ounces of lead or 18 ounces of gold?

  Submitted by Ady TZIDON    
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The 18 ounces of gold weigh substantially more than the 18 ounces of lead. The difference is not in physics but units. Gold is usually measured in troy ounces ( 31.103 grams metric/ounce). Lead - in normal avoirdupois ounces (28.350 grams/ounce). This makes about 10% difference.

Comments: ( You must be logged in to post comments.)
  Subject Author Date
re: Oh that is just wrong.Dej Mar2013-08-06 05:22:47
Some ThoughtsOh that is just wrong.jduval2013-08-01 18:05:22
SolutionSolutionK Sengupta2013-08-01 13:20:47
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