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Mathematics 17 Online
OpenStudy (anonymous):

is 2mm square equal to 2mm^2?

OpenStudy (anonymous):

NO

OpenStudy (anonymous):

@Algebraic!

OpenStudy (anonymous):

not sure what you mean

OpenStudy (anonymous):

(2mm)^2 is not 2 mm^2 a square with sides 2mm long is not 2 mm^2 if you're just writing " 2 mm^2" a different way, then sure.. they're the same...

OpenStudy (anonymous):

the problem is: a steel bar 2 mm square and 5 m long is stretched with a force of 499 N at each end. Find the stress, strain, total elongation, and fractional thickness of the bar... (physics problem)

OpenStudy (anonymous):

I think they must means CSA is 2 mm^2

OpenStudy (anonymous):

CSA?

OpenStudy (anonymous):

cross sectional area

OpenStudy (anonymous):

what's the CSA of the given?

OpenStudy (anonymous):

2 mm^2

OpenStudy (anonymous):

how to find its area?

OpenStudy (anonymous):

convert to square meters probably

OpenStudy (anonymous):

2 mm^2 * (1m/1000mm)^2

OpenStudy (anonymous):

and then multiply to 5m?

OpenStudy (anonymous):

that would be volume... don't you need CSA for this problem?

OpenStudy (anonymous):

stress is F/CSA

OpenStudy (anonymous):

ohh..

OpenStudy (anonymous):

do we have to convert it to meters too?

OpenStudy (anonymous):

square meters. yes.

OpenStudy (anonymous):

square meters to meters?

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