Re: School Science competition!!! Please R

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#185

From: Paul Knechtel
Date: Thu, 30 Mar 1995 00:00

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A trick we use in providing a rom of mass in electronic packaging, involves determining an average composite density of an equipment.  Example, by knowing the mass and volume of units which are similiar in design (materials, circuit boards etc.) you can determine its composite density (mass/volume).  Apply this figure to an equipment of known volume and you can provide a reasonalbe estimate at its mass.  You'd be how many black boxes have a  weight density of approx. .03lbs/in cubed. 

The same techniques could be used here.  In advance, calc the composite densities for vehicle of differnt makes models and years (to cover you bases and account for varying engine sizes and weight reducing material employeed in newer models) by using gross vehicle weight and an estimate of the cars volume.  The GVW should be available from the division of motor vehicels, and volume can be estimated by measuring the vehicle (find a big parking lot, don't let the owner see you, he may get pissed) 

good luck
pvk

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From: knechtep@thunder.gcsdnis (Paul Knechtel)
Subject: Re: School Science competition!!!  Please R
Date: 1995/03/30
Message-ID: <1995Mar30.191005.5759@news2.den.mmc.com>
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sender: news@news2.den.mmc.com (News Admin)
references: <3lc7s5$910@dscomsa.desy.de>
organization: Martin Marietta Astronautics, Denver
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newsgroups: can.schoolnet.phys.sr,k12.ed.science,sci.engr,sci.engr.mech,sci.physics,rec.autos.sport.tech,alt.autos.rod-n-custom

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