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What could cause a physical change in a bar of steel
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5 votes
What could cause a physical change in a bar of steel

User Ayenew Yihune Demeke
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2 Answers

7 votes
Hammering it and changing its shape
User Izkata
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6.6k points
4 votes
-- a very very very hot oven

-- a very heavy hammer

-- an electric drill
User Dylants
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6.2k points
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