This goes for all pennies, the blank penny was created in Philedelphia and the penny with the D was created in Denver. If you want to know the material or type you should see "how do you tell the difference between 1982 pennies?"
It's just a common penny with no added value.
1 cent
25 cents uncirculated, 1 cent if you found it in change.
It depends on the year and condition of the penny. If it is from any time in the 1950s or later, it is most likely worth nothing to collectors - so it is worth face value (1 cent). All the D means is that is is made in the Denver mint.
They have been released for circulation, so any you find are face value.
There's a picture at this site:
From 1982 to date all Lincoln pennies are copper plated zinc, the 1993-D is just a penny.
25 cents depending on if it is in mint condition
A Penny!or a melt value of 1.6723738129 as of 7:41 October 14, 2009 where as the melt value of a penny of 1963-1982 is 1.6642174575
Probably the 1982 penny if it's a copper version.
If the coin is a brilliant uncirculated example it may be worth 25 cents.
Check the weight. Copper pennies (pre-1982) should weigh 3.11 grams.
beefcakes
If by formula you mean composition, a post-1982 penny is 97.5% Zinc and 2.5% Copper by mass.
The D on a penny indicates it was made at the Denver, Colorado mint
Light a Penny Candle was created in 1982.
The current penny (1982-present) weighs 2.5 grams. Before 1982 it weighed 3.1 grams.