And boiled pennies in acid ...+002.jpg)
+004.jpg)
All in the name of science. So now it is time for us to collect our data as a class. Use the comments section of this post to give the densities that you measured. Give them as YEAR (Density gcm-3) [so you should report them as 1993 (7.8 gcm-3)]. This way you will be able to compare your data in your formal report with the data from the class.
11 comments:
Hi Folks. This is what I have.
2007p (7.58 gcm-3)
2007 (11.70 gcm-3)
2006 (7.47 gcm-3)
2001 (7.50 gcm-3)
1980a (9.27 gcm-3)
1980b (9.29 gcm-3)
Troy
Here are the densities I have. Andrew O.
1945 (9.19 gcm-3)
1955 (8.53 gcm-3)
1965 (8.67 gcm-3)
1975 (8.08 gcm-3)
1985 (8.36 gcm-3)
1995a (8.62 gcm-3)
1995b (9.24 gcm-3)
1995c (8.61 gcm-3)
2005 (7.21 gcm-3)
2005p (7.92 gcm-3)
Here are the Densities I got
1992- 1.2g/cm-3
1973- 0.81g/cm-3
1974- 0.93g/cm-3
1990- 0.83g/cm-3
1997- 0.81g/cm-3
2005- 0.64g/cm-3
2005P- 1.4g/cm-3
Andrew and Troy, your guys densities seem very large, are you sure you used the average mass of one penny and not the mass of the tem pennies? I have both masses in my table and I was confused at first too, maybe you guys made the same mistake I did at first of you guys had some intense pennies haha.
Meghan K
Not Sure Meghan, I'll check my calculations. It's very possible.
I'll post if I find the nature of my high numbers.
Thanks
Troy
Ricci
1992- 1.13g/cm-3
2006p- 1.03g/cm-3
2006- 0.97g/cm-3
1975- 1.46g/cm-3
1966- 1.34g/cm-3
1990- 1.11g/cm-3
1986- 1.10g/cm-3
1953- 1.37g/cm-3
Katrina and Summer
1992-1.19g/cm-3
2001-.75g/cm-3
2000-.75g/cm-3
1999-.75g/cm-3
1998-.75g/cm-3
1997-.75g/cm-3
1989-.82g/cm-3
1981-.70g/cm-3
1976-.97g/cm-3
1970-.84g/cm-3
1969-.83g/cm-3
1962-.81g/cm-3
1957-.83g/cm-3
1951-.83g/cm-3
1947-.85g/cm-3
1946-.85g/cm-3
Hi all,
I've double checked my figures and they seem to be reasonable. I also noticed that Dr. Mel shows a 1993 penny's density, for an example, and reports it as being 7.8 gcm-3. I'll ask about this tomorrow.
2008 [6.76 gcm-3]
1972 [7.88 gcm-3]
1966 [10.82 gcm-3]
1943 [8.27 gcm-3]
Those should be a little better...
Thanks Joel ;)
Post a Comment