What is PAPER CLIP, ELECTRICAL WIRE, SPOON, SAFETY PIN AND KITCHEN FOILS made out of?
3 choices for each is Steel (iron), alluminium and copper.
Please? help me.
2007-11-08 09:01:40 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Engineering
I mean, like e.g Kitchen foil is alluminium
2007-11-08 09:07:43 · update #1
alluminum
2007-11-08 09:05:53 · answer #1 · answered by SunflowerSeed 2 · 0⤊ 2⤋
Paper clip - Steel
Electrical Wire- Copper
Spoon - Steel (stainless)
Safety pin - Steel
Kitchen foil- Aluminium
2007-11-08 09:11:30 · answer #2 · answered by beanie 2 · 1⤊ 0⤋
Paper Clip - Stainless Steel SUS430 grade (pretty bog standard S/Steel)
Electrical Wire - Copper (Cu), probably has to conform to some standard, but I don't know it off the top of my head.
Spoon - Stainless Steel SUS304 grade or how about Silver (Ag)?
Safety Pin - Stainless Steel, probably SUS304 (higher grade than 430 - same as used for scalpels)
Kitchen Foil - Aluminium, but must conform to EN601 food grade standard (i.e. it can't be any old crap ally as its not allowed to contain too much heavy metals and other nasties)
2007-11-08 23:28:17 · answer #3 · answered by Colin 3 · 0⤊ 0⤋
All of the 3
2007-11-08 09:07:01 · answer #4 · answered by trickytrev 4 · 0⤊ 3⤋
Well, kitchen foil is also known as aluminum foil, so that would be it. Electrical wire is usually copper. Paper clips and safety pins have to be the strongest metal on the list, so what do you think that would be?
2007-11-08 09:05:55 · answer #5 · answered by Anna P 7 · 0⤊ 0⤋
steel, copper, steel, steel, aluminium
They make electrical wire out of aluminium too, it has problems with joints oxidizing and going high resistance and burning out, but it is lighter and stronger than copper and much more conductive than steel so they use it for overhead high voltage cables. The 132kV grid in the UK used to be aluminium over steel core and the 400kV lines were all aluminium. My friend used to survey the joints from a helicopter with an infrared camera to find the ones that were heating up so they could be replaced before they failed. Some houses were wired with aluminium, but it caused too many fires so it's quite unusual to find any now.
I have an aluminium spoon that my grandfather got from a GI in WWII when he was a Royal Engineer clearing mine fields and building bridges under fire. When aluminium was discovered it was more valuable than gold because it was almost impossible to extract before electricity was discovered, so they made plates and cutlery out of it.
2007-11-08 09:16:56 · answer #6 · answered by Chris H 6 · 0⤊ 0⤋
Spoons are most interesting! They can be made out of simple steel but rust, or aluminium which tend to bend or stainless steel - most of them nowadays, or Mazac which is a Zinc alloy - cheap.
The steel ones were nickel plated to stop the rusting they were labelled 'EPNS' which stands for electroplated nickel silver.
Paper clips also tend to be electroplated to avoid rust staining the paper.
Electric wire can be copper but to save cost or weight for the cable on pylons Aluminium. Safety pins are heat treated to make them springy and also electroplated.
About the only one there which is pure is aluminium fol.
RoyS
2007-11-12 09:01:28 · answer #7 · answered by Roy S 5 · 0⤊ 0⤋
paper clip is mild steel
electrical wire is copper
spoon and safety pins are usally stainless steel
and kitchen foils is aluminium.
hope this helps
2007-11-10 05:33:40 · answer #8 · answered by kittymiffyetcie 3 · 0⤊ 0⤋
Paper clip is steel.
Electrical wire is copper.
Safety pin is steel.
Kitchen foil is aluminium.
(Oops!, I missed 'Spoon'...Generally steel but, I've seen cheap aluminium ones).
2007-11-08 09:09:41 · answer #9 · answered by Norrie 7 · 0⤊ 0⤋