Please help, I do not understand why my answer is incorrect.

A material has a fracture toughness of $80\mathrm{.}0$ MPa$-$m$0\mathrm{.}5$MPa$-$m$0\mathrm{.}5$ and a yield strength of $900$ MPaMPa and is to be made into a large panel.

Part A

If the panel is stressed to one$-$half the yield stress, what is the maximum central crack size ll that can be tolerated without catastrophic failure?

Express your answer to three significant figures and include the appropriate units.

Activate to select the appropriates template from the following choices. Operate up and down arrow for selection and press enter to choose the input value typeActivate to select the appropriates symbol from the following choices. Operate up and down arrow for selection and press enter to choose the input value type

ll $=$

nothingnothing

If the panel is stressed to one$-$half the yield stress, what is the maximum central crack size l that can be tolerated without catastrophic failure?

Express your answer to three significant figures and include the appropriate units.

l$=$

$10\mathrm{.}04$

mm

Previous Answers

Request Answer

Incorrect; Try Again; $3$ attempts remaining