use a scale
312.5g
100 pennies = 100¢ = $1.00
grams
Grams
Yes, the mass of 10 pennies is equal to the mass of 10 times one penny. This is because mass is additive, meaning that the total mass of multiple objects is the sum of their individual masses. Therefore, 10 pennies will have the same mass as 10 multiplied by the mass of one penny.
25.0 grams
a scale
The mass of a single penny is approximately 2.5 grams. Therefore, the mass of 20 pennies would be 20 times 2.5 grams, which equals 50 grams.
The mass of a single penny is approximately 2.5 grams. Therefore, the mass of 20 pennies would be 20 times 2.5 grams, which equals 50 grams.
The mass of a single U.S. penny is approximately 2.5 grams. Therefore, the mass of 100 pennies would be about 250 grams. This is equivalent to around 0.25 kilograms.
In an ideal scenario, the mass of 20 pennies would be equal to 20 times the mass of one penny, assuming all pennies are identical and have the same mass. However, in practice, slight variations in mass due to wear and manufacturing differences may occur, but these would generally be negligible. Therefore, for most practical purposes, you can consider the mass of 20 pennies to be approximately equal to 20 times the mass of one penny.
The metric unit for mass is the kilogram. For smaller masses, as in this case, you may also use grams or milligrams.