We”ve all seen screws, but how do they work? Why is it easier to screw something into something than to simply push it in? With basic hands-on experiments and clear descriptions, this simple machine is explained.
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Formatera PDF ● Sidor 48 ● ISBN 9780822500667 ● Utgivare Lerner Publishing Group ● Publicerad 2001 ● Nedladdningsbara 3 gånger ● Valuta EUR ● ID 4754238 ● Kopieringsskydd Adobe DRM
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