# HW1 - University of California Santa Barbara Department of...

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University of California – Santa Barbara Department of Chemical Engineering ChE10: Introduction to Chemical Engineering Professor Mike Gordon, Fall 2009 Homework #1 : due Monday 5 Oct 2009 (1) Calculate the following using conversion factors from your textbook . SHOW YOUR WORK. (a) atomic density (in [atoms/cm 3 ]) of lead; for reference, Pb ρ = 11.34 [g/cm 3 ] (b) 1 [hp-hr] = ? [dyne-cm] (c) speed of light in [furlongs/fortnight]; a furlong is 1/8 th of a mile and a fortnight is 2 weeks. (d) weight of 1 ft 3 of lead on the moon in English (engineering) units; g moon ~1/6 th g earth (2) Being a successful engineer means you can make good “order of magnitude” estimates …so, how much money would you have if you filled a 5 gal bucket with quarters? How much would the bucket weight in SI units? Use a single dimensional equation for each of your calculations. State your assumptions clearly. Is your \$\$\$ answer larger or smaller than the “actual” value? Why?

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## This note was uploaded on 01/05/2010 for the course CHE CH E 10 taught by Professor Gordon during the Fall '09 term at UCSB.

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HW1 - University of California Santa Barbara Department of...

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