How many ketchup packets are used in America every year?
How much dog hair is shed (and subsequently vacuumed) in the U.S. each year?
Look for the answers online at tpt.aapt.org under “Browse,” at the very end of the current issue.
Question suggestions are always welcome!
For more Fermi questions and answers, see Guesstimation 2.0: Solving Today’s Problems on the Back of a Napkin, by Lawrence Weinstein (Princeton University Press, 2012).
AAPT members receive access to The Physics Teacher and the American Journal of Physics as a member benefit. To learn more about this member benefit and becoming an AAPT member, visit the Joining AAPT page.