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If you scratch a penny

If you scratch a penny with an steel file, will the copper of the penny rub off on the file, or the steel (iron) of the file rub
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2. asked by Please help
3. 2,263 views
According to Mohs Hardness Scale, which statement below is TRUE: click hardness scale in the the picture to the right. A. Talc
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2. asked by PJ
3. 33 views
According to Mohs Hardness Scale, which statement below is TRUE: click hardness scale in the the picture to the right A. Talc
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2. 112 views
According to Mohs Hardness Scale, which statement below is TRUE: click hardness scale in the the picture to the right.Image
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2. 26 views
Harder materials can scratch softer materials.. Titanium can scratch nickel. . Cooper can scratch lead. . Nickel can scratch
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2. 86 views
Bob has a brother, Jim, who has a daughter named Bertha. Bertha's daughter, Jennifer, has a sister named Penny. Which of the
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2. asked by Ingrid
3. 7,221 views
A penny is dropped from a 300ft high bridge.a. How long does it take for the penny to reach the ground below? b. What is the
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2. asked by Brent
3. 620 views
if you place a dime penny and quarter on a spinning turntable which coin has a greater speed than the penny than the penny
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2. asked by Lex
3. 905 views
A man tosses a penny up into the air above a 100 ft well with a velocity of 5 ft/sec. The penny leaves his hand at a height of 4
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2. asked by cole
3. 764 views
A penny falls from a windowsill 25.0 m above the sidewalk. How fast is the penny moving when it strikes the ground? (Remember
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2. asked by Anonymous
3. 1,765 views