Fa04-MT1-Packard-Exam

Fa04-MT1-Packard-Exam - Physics 7b Midterm Exam #1 Fall...

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Physics 7b Midterm Exam #1 Fall 2004 Name:__________________________Disc. Section_______________ SID__________ #1______ #2______ #3______ #4______ #5______ Total________ M w of O 2 = 32 g/mol, k b =1.38x10 -23 J/K, N A =6x10 23 The weight of a 1kg mass on the Earth’s surface is 2.2pounds. The relative weight of each problem is indicated next to the problem number. Most credit will be given for algebraic work. Please do not insert numerical values until you have a final algebraic answer inside a box . If you don’t know a particular constant, use a symbol to get partial credit. It is almost impossible to award partial credit when a student has inserted numbers too early. If you get stuck on one problem, go on to the next and come back to the difficulties later in the exam period. Do not leave early until you have completed everything. Do not quit! Never, never, never quit!!
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1. (20 pts) PG&E charges for natural gas in a unit called a therm. 1 therm = 10 5 BTU. 1BTU= heat to raise the temp of one pound of water by 1 o F. The gas price is $0.67/therm.
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This note was uploaded on 02/04/2010 for the course PHYSICS 7B taught by Professor Packard during the Spring '08 term at Berkeley.

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Fa04-MT1-Packard-Exam - Physics 7b Midterm Exam #1 Fall...

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