How Much Does 2.9955623e+05 Tonne Weigh?

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Homework Help Overview

The discussion revolves around understanding the weight of a mass calculated in scientific notation, specifically 2.9955623e+05 tonnes, within the context of engineering and CAD software. The subject area includes units of measurement and conversions between metric tons and other weight units.

Discussion Character

  • Exploratory, Conceptual clarification, Assumption checking

Approaches and Questions Raised

  • Participants explore the meaning of scientific notation and the unit 'tonne', with questions about the implications of the calculated mass and its conversion to other units. There is also inquiry into the density used for the part and its potential impact on the results.

Discussion Status

Some participants have provided clarifications regarding the scientific notation and the definition of a tonne. There is ongoing exploration of the implications of the calculated mass, particularly concerning density and potential errors in input values.

Contextual Notes

Participants are discussing the implications of the calculated mass in relation to density, with a focus on the units required for input in the CAD program. There is uncertainty regarding the accuracy of the density assigned to the part based on the mass calculated.

designerdan08
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Hi,

Im a studying designer currently working with an engineering CAD program. I have calcualted the mass of the part using an analysis feature in the program. However, I have very little engineering interlect and cannot completely understand the results.

The returned result is 2.9955623e+05 TONNE

If anyone can help me understand this it would be much appreciated.

Cheers

Daniel
 
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Are you asking about the scientific notation or the unit? A 'tonne' usually means a metric ton, which is 1000 kilograms. The number is "computerese" (it goes back to FORTRAN notation) for the value expressed in scientific notation; here, this would be 2.9955623·10^5 or 299,556.23 (which is probably way more significant figures than the number is good for...).
 
1 tonne = 2204.6226 pounds

It's called a metric ton.

You got the 2.99 x 10^5 part of it I'm guessing.
 
I appreciate your immediate reply

I thought that may be the conversion but does that mean that it is 299,000 tonnes!? If so the density assigned to the part is incorrect so I must change it
 
What did you use for the density? Does the input want kilograms per cubic meter or grams per cubic centimeter? (That would make a difference of a factor of 1000.)
 

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