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ViviA metal is classified as a ferrous metal if it has iron in it ; tip (if a magnet sticks to a metal, it is ferrous)
A metal is classified as a non-ferrous metal if it has no iron in it, tip (if a magnet does not stick to a metal, it is non-ferrous)
Non-ferrous metals:
Brass
Copper
Nickel
Tin
Ferrous metals:
Steel
Iron
Stainless steel
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Types of alloys?
brass, steel and bronze are the most common alloys. they are made of: brass: 35% zinc and 65% copper - uses, musical instruments steel: 99% iron and 1% carbon - uses, tools, car bodies etc bronze: 87.5% copper and 12.5% tin - uses, boat hardware and screws etc some not so common alloys are alnico (aluminium and nickel and cobalt - used to make magnets) and stainless steel (18% chromium, 80.6% iron, 1% nickel and 0.4% carbon - used to make surgical tools and tableware and cookware.)
What are three advantages of some alloys when compared to pure metals?
Alloys are sometimes more useful than pure metals because alloys are stronger - or tougher (toughness is resistance to fracture). Pure metals tend to be softer than alloys and therefore tend to get dented, scratched, or broken/fractured more easily. Alloys are often lower cost than pure metals but not necessarily so. As an example, stainless steel is more expensive than pure iron.
Why is the Three Gorges Dam controversial?
it is the most controversial public works in modern times
In a modern industrial plant the most likely polyphase power system in use is a A. one-phase system. C. three-phase system. B. two-phase system. D. four-phase system.?
A "three-phase system" is a polyphase system having three phases. The term "polyphase system" just means a system having multiple phases. If it is used by itself, "a polyphase system" doesn't mean "a three-phase system".
Who was the first ever person to invent anything?
we don't know. he/she was definitely not a modern human. Whoever it was was probably a common ancestor to both chimps and men, which would place it over three million years ago.
