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A coin will get warmer when struck by a hammer just like a nail will. The energy of the hammer blow is converted into heat. The atoms and molecules in the coin will be compressed a great deal by the hammer blow, and this will break metallic crystal bonds in the metal matrix. This creates heat. The energy of the hammer blow must be conserved, and heat is a large part of the equation.
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How do you open a coin box on a washer without keys or a lock pick?
A large hammer and a chisel or a cutting torch.
Why does a one peso coin sticks on a magnet while a five peso coin doesn't?
It depends on the year, if you have a 5 Peso coin struck before 1992, it contains no magnetic material (copper-nickel, brass and silver are not magnetic), if you have a 1 peso coin dated 1984 or later it is magnetic because the coins are struck in steel and steel is magnetic.
Why does a coin and a feather fall with different accelerations in the presence of air?
The structure of the feather makes it catch the air and fall more slowly than the coin. Refer to the related link for the Apollo 15 mission to the moon, which has no atmosphere, in which an astronaut drops a hammer and a feather at the same time.
Why doesn't the temperature of an object change if you break the object in half?
It will change. Unless you manage to break it in half without doing any work to it in which case it wouldn't. This is because the energy within the system must remain constant. If you imagine the object existing inside a bubble, all the energy trapped in that bubble must remain the same. So if the object were to spontaneously divide in half without using any energy, the sum of the energy within the two halves must now equal the energy of the whole before it split, so if one half were to magically heat up, the other would now have to cool down to balance the system. Because this is impossible, the only way for the system to remain balanced is for neither half to heat or cool. Therefore there is no temperature change. The other side of the coin is if you were to come from outside the bubble and do work to the object, i.e. break it in half with a hammer. In this case you are imparting energy to the system (hitting it with a hammer) and there has to be a change in the energy of the object. Since we're talking thermal energy, a change in temperature must occur (the object gets warmer). Moral of the story, if you hit something with a hammer it will get warmer.
What if a 1977 penny is a shiny silver and sticks to a magnet?
All genuine 1977 cents were struck in bronze, which is not magnetic. If your coin sticks to a magnet it has either been plated with enough nickel or other magnetic metal to stick, or it was struck in a different metal altogether. If it's a different metal, you either have a fantasy piece someone made privately, or possibly an error that's called an off-metal strike. That error occurs when a blank for a foreign coin accidentally gets mixed in with normal blanks at the Mint. Off-metal strikes can be worth a premium, but you'd need to have your coin inspected by a professional coin dealer or grader in order to tell if you have a true error, a fake, or just an altered coin.
When did Sacagawea become on the one dollar coin?
The first Sacagawea dollars were struck in 2000.
What does it mean when a coin is struck in solid 24 carat pure gold?
The term "struck", when referring to coins, means the making of the coin. The blank planchet (the round blank disc which will become the coin) is struck (pressed) between the dies and the coin is made.
What is a capped die?
A capped die is caused when a struck coin sticks to the upper hammer die. Once the coin is stuck to the die face, the reverse of the struck coin becomes the new die face. When the next blank is fed into the collar and the strike occurs, the reverse design of the adhered struck coin impresses itself into the new blank. This struck coin is a brockage strike. The coin adhered to the upper die is known as a die cap. This process repeats itself as more coins are struck by the cap. The greater the number of strikes, the higher the cap metal will be pushed around the upper die shaft. Eventually, the cap brakes away from the die in the shape of a thimble.
Why is there a hammer and sickle on Kennedy half dollar?
8-4-11>>> It's a counter-stamp that has been added to the coin after it was struck at the Mint. I have only seen the "Hammer & Sickle" on the Bicentennial Kennedy halves. The origin is unknown to me, and it only has value to someone that wants it.
Does the hammer in curling alternate?
The hammer switches between the teams based on which teams scores in each end. The team that does not score gets the hammer for the next end.At the beginning of the game, the hammer for the first end is decide usually by a coin flip.
How rare is a 1990 penny half struck on both?
If this coin is indeed half struck on both sides, it could be worth a lot of money. Advise you take the coin to a coin dealer to have it appraised.
What happens when you put a coin in coke for a week?
The coin will become much shinier. If you put ketchup on a coin for 4-5 mins. It will also become shinier.
Was Samuel de Champlain on the Canadian Dollar coin?
yes, his portrait was struck on a Canadian coin.
What is the value of a 1789 denver mint coin?
Look at the coin again. The first coin struck at the Denver Mint was in 1906 What you have is a Mint medallion that was included in coin sets for many years. They were struck on cent blanks. The date is the year that the Treasury Department was established.
Are 1804 copy silver dollars worth anything?
It depends on the metal they are struck in. Since there is no one issuer of replica currency, the metals they are struck in varies. Some might be struck in nickel or silver plated steel and might be worth a few cents. Others might be struck in high purity silver and might be worth $25+. It all depends on what the coin was struck in, and unless I have the coin in front of me, I can't tell you what metal your coin is struck in. The coin has no value beyond its metal content.
What is a 1776 gold coin of America?
No US gold coins were struck in 1776. The first gold coins were struck in 1795 by the US mint. Most likely your coin either isn't an American coin or is a modern fantasy piece. The value depends on what your coin is exactly.
What is proof strike?
A proof coin is struck using specially polished dies and usually on a specially prepared blank and often struck twice (or more) to make sure that all designs are fully struck up. On a good proof strike, the fields of the coin (the parts of the coin with no design) will be mirror like while the design of the coin will have a "frosted" appearance.
