All pennies dated 1983 and later weigh 2.5 gm each. Twenty rolls of 50 coins each is 1000 coins so that multiplies out to 2.5 kg.
Are you talking about English pennies or U.S. cents? If you are talking about English pennies and values, £1 = 100p so you need 500 pennies to make £5. If you are talking about U.S. cents and weight, it depends on the coins' dates. Cents minted before 1982 weigh 3.11 gm and cents minted after weigh 2.50 gm. Cents minted during 1982 can weigh either amount. A pound is 453.6 gm so get out your calculator and go from there.
One cent (minted 1982-present) weighs 2.5 grams. 50 of them weigh 125 grams.
30000 pennies would weigh approximately 68.18 pounds.
The weight of a single penny is approximately 2.5 grams, or 0.00551156 pounds. Therefore, 8 pounds of pennies would be equivalent to approximately 1450 pennies (8 / 0.00551156). In terms of monetary value, each penny is worth $0.01, so 1450 pennies would be equal to $14.50.
Copper pennies minted before 1982 weigh 3.11 grams.
The weight depends on the year, as there was a change in the metal composition in 1982. Pennies minted after that weigh 2.5 grams. Older ones weigh 3.11 grams.
Pennies minted before 1982, which includes all wheat pennies (except in 1943) contain 95% copper and weigh 3.11 grams.
How much does a 2 liter of pennies weigh?
It depends on their dates. Cents minted in 1981 and earlier are made of copper and weigh 3.11 gm. Cents minted in 1983 and later are made of copper-plated zinc and weigh 2.5 gm. Cents minted in 1982 can be made of either metal. 1 lb = 453.6 gm so decide what kind of penny you're using and grab your calculator.
One penny weighs 2.5 grams, so 3,500 pennies weigh 8,750 grams.
Depending on how worn they are, approximately 143. Except for 1943 steel cents, all wheat cents were minted in a bronze alloy and weighed 3.11 gm when new. A US pound is 453.6 grams, so 453.6 / 3.11 ≈ 143 coins. Cents minted after mid-1982 are made of copper-plated zinc and weigh 2.5 gm each, so you'd need a bit more than 181 of those to weigh a US pound.
5000 pennies weigh about 27.5 pounds.