the coin will at rest because you slowly pull the cardboard
A coin without a date would be considered an error coin. Numbers and letters are the usual parts of a coin that are missing due to the die being filled with debris, grease, metal filings or some other foreign substance. Although it is rare for the complete date to be missing it could happen and the coin would be rather desirable for certain collectors.
The U.S. Mint did not produce any proof coins in 1949. Mint Sets (uncirculated coins) were issued in 1949. The sets have two of each coin issued for circulation and were packaged in cardboard. Current value of a 1949 Mint Set is $1,000.00 to $1,400.00 depending in the condition of the coins.
A 1884 Trade Dollar was only minted in proof condition by the US Treasury and carried NO mint mark. If you happen to possess this coin, its value is: $125,000!
The Illinois Sesquicentennial coin came in two varieties, a Silver Proof coin and a Bronze coin. At the time, you had to buy 25 of the bronze coins to order to get to be able to purchase a silver coin.
Which coin
When I slowly pulled the cardboard, the coin placed on top of the cardboard remained at rest but was dragged along with cardboard. Explanation: That is because, the coin was dragged by the force in the surface of the cardboard called friction.
If you slowly move the cardboard the coin on top will move with the cardboard. Law of Inertia. There is not enough force to drop the coin into the water.
When I slowly pulled the cardboard, the coin placed on top of the cardboard remained at rest but was dragged along with cardboard. Explanation: That is because, the coin was dragged by the force in the surface of the cardboard called friction.
te coin will just stayed on the card board..
The coin would float.
Friction is a sticky force that appears when 2 objects rub against each other. If you push or pull slowly friction helps pull or push the tower along with the bottom coin. If you push or pull quickly, the coins still rub, but the friction force doesn't have time to get the stack moving. So the coin shoots out without pulling the tower with it.
nothing happens
I got an old shoe box and put pieces of cardboard in to separate the the dollars and change. That's an easy way to do it.
copper is placed above the silver in the ractivity series which indicates that copper is more reactive than silver . when a copper coin is kept immersed in a solution of siler nitrate ,silver from its solution will deposit on copper coin . copper slowly displaces silver from the silver nitrate solution and the colour of solution changes from colourless to blue due to the formation of copper nitrate . the copper coin will disappear and silver will percipate out .
DO NOT CLEN WITH LIQUID!!!! I recommend you take a tissue place it over a coin and very carefully and slowly scrape the rusted areas.{Be careful not to scrape the surface of the coin or you will diminish its value}
If a person swallowed a coin it could cause many problems. You could have t go to the doctor to get it cut out.
Before beginning the trick, hide a coin in your left palm. In front of your audience, put an identical coin in your right palm. Now, with both hands as fists, spin them around or knock them together. This may be done slowly to emphasize that the coin hasn't moved. Have the kids guess which hand the coin is in. No matter which hand they guess, the coin will be in the other hand!