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## Homework Statement

The figure shows the stress-strain curve for a material. The scale of the stress axis is set by

*s*= 280, in units of 10^6 N/m2. What are

**(a)**the Young's modulus and

**(b)**the approximate yield strength for this material?

## Homework Equations

E=stress/strain

## The Attempt at a Solution

so i know that for part a i needa divide 280/.004 but I am not sure what it means to use units of 10^6. also shouldn't part b be 280? the unit that is correct is N/m^2 (its an online grading program that told me this is correct) and i cannot answer a 10^6 or any 10^... (the system won't read it) what am i not understanding?