A copper penny has a mass of #3.1# #g# and a volume of #.35# #cm^3#. What is the density of copper?

1 Answer
anor277
Aug 11, 2016

#rho=(3.1*g)/(0.35*cm^3)~=9*g*cm^-3#

Explanation:

#"Density"# #=# #"Mass"/"Volume"# by definition.

Now this is the density of the copper coin, not copper. In the UK copper coins, the #1# #p# and #2# #p# coins are copper plated steel; clearly, this is done for durability. AS you probably know, pure copper is fairly soft and malleable.

Related questions
See all questions in Density
Impact of this question
22312 views around the world
You can reuse this answer
Creative Commons License