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true or false, Discovering which of two materials can scratch the other is a way to compare the hardness of the materials
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May 16, 2018
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true or false, Discovering which of two materials can scratch the other is a way to compare the hardness of the materials
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Agentem
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This answer is true :)
Amitklein
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May 19, 2018
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True, the hardness of all materials in relative
Virender
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May 23, 2018
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