PHYS_2014_Homework_1 - PHYS2014 Benton Fall 2010 OSU...

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PHYS2014 Fall 2010 Benton OSU Physics Dept. 1 Physics 2014: General Physics I Homework Assignment 1 Due: Friday, 3 September 2010 at the beginning of the Recitation session. Problems: 1. Convert the unit of furlongs/fortnight into meters/second. 2. Explain why manholes and manhole covers are circular and not some other shape (e.g. rectangular or oval). 3. Dr. Larry Pinsky, chairman of the Physics Department at the University of Houston, travels more than anyone else I know. Last year he made 8 round trips to Geneva (home of CERN, the European Particle Physics Center), 3 round trips to Tokyo (the Japanese KEK particle physics laboratory is in Tsukuba, near Tokyo), 7 round trips to Chicago (Fermi National Accelerator Laboratory), 5 round trips to New York (Brookhaven National Laboratory), 2 round trips to London (apparently he likes English beer), and 1 round trip to each of the following cities: Moscow, Buenos Aires, and New Delhi (for scientific conferences). Based on the table of round trip distances below, find Dr. Pinsky’s average speed last year in m/s and in miles/hour. Why might this estimate be on the low side (i.e. too small)? What was Dr. Pinsky’s average velocity last year (assuming he spends every New Year at home)? (In case you’re wondering, a typical jetliner flies at about 245 m/s or 550 miles/hour.)
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