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09_1090_hw1

# 09_1090_hw1 - Physics 1090 Homework#1 Due Thursday...

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Physics 1090 Homework #1 Due Thursday, September 3 Reading assignment : Chapters 1, 2, 3 of the notes . 1. Here’s an exercise problem for Babylonian students, from the Yale Babylonian collection (YBC 4186) (Quoted from History of Mathematics , J. Fauvel and J. Gray, p 27): A cistern is 10 GAR square, 10 GAR deep (a GAR is a nindan, equal to 12 cubits: this is an immense cistern!) A standard Babylonian garden plot is one square nindan. How many garden plots can be irrigated to a depth of one finger from the full cistern? The answer given is written 1, <<<< meaning 1,40 (but what number is that?! Don’t forget 1 and 60 , etc., are the same!) 2. Find the height of this lamppost in front of Newcomb Hall by measuring the length of its shadow, and the length of your shadow at the same time of day, and your height. (You can measure in paces.) 3. Find the spot (it’s at ground level, as you can see!) where this photo was taken from. Notice that the head of the statue is very close to in line with the top of Cabell Hall. Pace off the distance from the place the

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09_1090_hw1 - Physics 1090 Homework#1 Due Thursday...

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