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Q: Which will last longer submerged in water a painted or galvanized piece of steel?
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Which is stronger mild steel or galvanized?

Galvanization is just a surface treatment, and says nothing about the strength of the core material. You could have mild steel, one piece galvanized and one not, and they'd be equally strong.


Can you power a light bulb with limes?

Use a small flashlight bulb.... No more than 3 volts, maybe 1.5 would be better... you'll need a couple of limes, a couple of galvanized nails, a couple pieces of copper wire.Another answerPut a nail and a piece of copper in each lime, as far apart as you can. Connect one of the nails, to the copper in the other lime. Connect the copper in the first lime to the positive side of a small LED, and the galvanized nail in the 2nd lime to the negative side of it. Vwala!You should be able to get about 1 1/2 VDC out of the contraption....


Why is gold considered as an element and an atom at the same time?

An element is a substance that cannot be broken down into simpler substances. An atom is a single piece of an element. If you break an atom apart, you no longer have that substance.


Is biting into an apple a physical change?

ChemistryNo, it isn't a chemical change. Just because the apple lost a piece, mass, and volume, doesn't mean it is no longer an apple. Rather, this is a mechanical change.


Should you crouch against an inner wall during an earthquake?

The best way survive an earthquake is lay next to a piece of furniture that is longer than you are tall. You do not want to be under the furniture in case the building's roof collapses, because that piece of furniture will also collapse. When it does, there will be a void left on either side of it, where you can be safe from the falling debris.