You purchased 5 oz of gold in Quito, Ecuador (g = 977:110 cm/s2 ), for $400/oz. You then took the gold and the same spring scale on which you weighed it in Quito to Reykjavik Iceland (G = 983:06 cm/s2 ), where you weighed it again and sold it for $400/oz. How much money did you make or lose, or did you break even?
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