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Title: Dimensional Analysis problems ap chemistry been hours help? Post by: oblivionks on Aug 21, 2012 If one afternoon Mike Gauthier decides to dig a hole through the earth to China for a game of ping pong, how manycenturies would elapse before he got there if he dug at a rate of 0.400 miles depth per day and the diameter of the earth is1.2700 E 7 m? (1.61 km/mile)
Title: Dimensional Analysis problems ap chemistry been hours help? Post by: FISH0818 on Aug 21, 2012 Rate = 0.4 miles per day.
1 mile = 1.61km => 0.4 mile = 1.61 x 0.4 km = 0.644 km Rate = 0.644 km per day. Distance to dig = 1.27 x 10^7 m Time needed: = distance/rate = (1.27 x 10^7 m)/(0.644 km per day) = 1.97 x 10^4 days = [ (1.97 x 10^4)/365 ] years = 54 years = 0.54 centuries, accurate to 2 sig figs. Title: Dimensional Analysis problems ap chemistry been hours help? Post by: oblinger on Aug 21, 2012 1. cnvert diameter of earth from meters to km
2. convert km to miles 3. divide miles per day by diameter of earth in miles 4. divide days by days in 1 century Title: Dimensional Analysis problems ap chemistry been hours help? Post by: mikejac on Aug 21, 2012 just a factor label question
use this http://www.kentchemistry.com/links/Measurements/dimensionalanalysis.htm Title: Dimensional Analysis problems ap chemistry been hours help? Post by: toma2004 on Aug 21, 2012 Dimensional Analysis problems ap chemistry
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