if a material is hard what ht it be done for make soft
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Answer:
Vinegar dissolves stuck-on soap. Fabric softener and dryer sheets coat the fibers with chemicals to make them softer, according to schiff-consulting.com. These items also reduce static electricity. Vinegar is the most environmentally and biologically safest additive to use
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Step-by-step explanation:
Hardness -
The principle is that an object made of a harder material will scratch an object made of a softer material. When testing coatings, scratch
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