narendra dev
narendra dev
Amsuvarma
Nepal Investment Bank
Raed
The percentage of any metal in a coin would depend entirely on the coin and the country it came from. An Australian 1962 "copper" coin (bronze) contains 97% copper. An Australian 1962 "silver" coin (cupro-nickel) contains 40% copper. A British 1962 "copper" coin (bronze) contains 97% copper. A British 1962 "silver" coin (cupro-nickel) contains 75% copper. An American 1962 "copper" (bronze) 1¢ coin contains 95% copper An American 1962 "nickel" 5¢ coin is actually 75% copper An American 1962 silver coin is 10% copper, with the rest silver.
The mass of a copper coin can vary depending on the size and denomination of the coin. On average, a copper coin like a US penny weighs about 2.5 grams.
To introduce an unusual or unfamiliar word, to coin new words, or to introduce a new meaning to a familiar word
Depending on the coin and the pin, it would be most likely that the coin is much heavier.
pratap malla
Exactly the value of the copper in the coin. No more. The current price of copper is about $3.50 pound. So your coin just has sentimental value.
the components of coin are copper and zinc
When a copper coin is heated on a Bunsen flame, it undergoes oxidation, forming copper oxide. Copper oxide is a black compound, which is why the coin appears black.