Using the Mohs Hardness Scale, what is the hardness of a nickel (as in piece of money worth 5 cents)?
90261
Rather than giving you the answer, since you already have it, I would rather teach you how to find the answer without using the internet!\n\nWhat materials do you have that have a known hardness? \nYour fingernail is about 2.5, so you know the nickel is harder than that. \n\nA copper penny is about 3.5, so you know the nickel is harder than that!\n\nWindow glass is about 5-5.5, and a typical knife blade is about 5.5. My knife scratches the nickel, but my nickel won't scratch glass. It may be less than 5 in hardness. If I had a piece of fluorite I expect I would find that the nickel and the fluorite would both barely scratch the other. The nickel should be a hardness near 4, and less than 5. Keep in mind that some minerals have a range of hardness. It may vary by as much as 1 depending on the impurities in the mineral. \n\nThe lesson here is to learn what common items you have to test with, and if you have a test kit, to be sure you are familiar with the different hardnesses, and be able to interpret the scratch. There is a difference between a dust  trail and a scratch. Be familiar with that.  \n\nLook at this page:\nhttp://mineral.galleries.com/minerals/hardness.htm\n\nTo remember Moh's scale:\nThe Geologist Can Find An Ordinary Quartz (that) Tourists Call Diamond\n\nTalc-Gypsum-Calcite-Fluorite-\nApatite-Orthoclase-Quartz-Topaz-\nCorundum-Diamond\n\nOkay...there's probably a better one but I forgot it.
615886
I've never heard of an 1873 indian head nickel but...\n\n1873 shield nickel is $20.00 in good grade.\n1873 indian head penny is $20.00 in good grade.
1152869
20 nickles and 5 pennies would work!
281669
the Mohs scale is a scale of hardness for gem material only and it goes by what will scratch what, like diamond at 10, corundum(sapphire and ruby) at a 9 and so on down the scale.  there are not equal increments between the numerical ratings either and scale does not apply to metals...  titanium will scratch very easily and really cannot be refinished while tungsten is extremely scratch resistant.  (My girlfriend is a jeweler)
138815
36 dimes ($3.60), 14 nickels (70¢)\n\nI did it via guess and check. =)
434721
it depends on: if the american pennies are:  steel, aluminum, or copper.  Thank You.  anymore trick questions?\n I have the answers  :)
1172156
5 nickels , 2 quarters, and 1 pennie = 8 coins
876730
A quarter and a nickel.\n\nONE of them is not a nickel...its a quarter!
342721
Depending on condition of the coins, the penny could be worth up to $8 and the nickel up to $2! Sorry!
878789
The Mint estimates it will cost 1.23 cents per penny and 5.73 cents per nickel this fiscal year, which ends Sept. 30. The cost of producing a penny has risen 27% in the last year, while nickel manufacturing costs have risen 19%.
90859
3 quarters = 75 cents\n2 dimes = 20 cents\n1 nickel = 5 cents\n\n75 + 20 + 5 = 100 cents, or 1 dollar\n\n1 dollar + 4 dollars = 5 dollars\n\n5/2 = 2.50\n\nSo she has two and a half dollars, or two dollars and 50 cents --- $2.50
385544
five cents is a nickel and ten cents is a dime. If youre wondering twenty five cents is a quarters and one cent is a penny
376104
Roughness is denoted by the unitless value K - for copper it is 0.0018
983191
Depends what medium is eroding it.\nI think you're looking for the hardness scale.
659331
Talc, with a hardness of 1 on the Mohs scale
929944
Nickel is harder than copper and provides better penetration into the target. Copper is softer and tends to mushroom much faster once it enters its target. \nIf you want penetration go for the nickel\nIf you want displacement go for the copper
1181036
Ruby, a form of Corundum has a hardness of 9 on the Moh's Scale.\n\nCalcite is a 3 \nK-Spar is a 6\nAgate is a 7