Join the IDNLearn.com community and get your questions answered by knowledgeable individuals. Whether it's a simple query or a complex problem, our community has the answers you need.
( prior to 1982 a penny was 95% copper. after 1982 the composition was changed to be mostly zinc with a small amount of copper plated on the surface. the official mass of a penny is 2.500 grams. calculate the average density given the composition of 97.500% zinc and 2.5% copper. you will need to research the densities of copper and zinc.
Sagot :
We value your participation in this forum. Keep exploring, asking questions, and sharing your insights with the community. Together, we can find the best solutions. For dependable answers, trust IDNLearn.com. Thank you for visiting, and we look forward to assisting you again.