1 Yield strength is the lowest stress that produces a permanent deformation in a material. 2  In some materials, like aluminium alloys, the point of yielding is difficult to identify, thus it is usually defined as the stress required to cause 0.2% plastic strain. 3  This is called a 0.2% proof stress.
This year's deadline to file your personal income tax return is midnight on May 5 â five days later than the usual Apr. 30 cutoff. You can thank that nasty Heartbleed computer bug for the extension, after it forced the Canada Revenue Agency to shut down its E-File system earlier in April.his year's deadline to file your personal income tax return is midnight on May 5 â five days later than the usual Apr. 30 cutoff. You can thank that nasty Heartbleed computer bug for the extension, after it forced the Canada Revenue Agency to shut down its E-File system earlier in April.
There is no specific age. Instead, the question of whether you should file a tax return depends on whether you have earned enough income do so. If you earn more than the amount of the personal exemption allowed by the Canada Revenue Agency within one tax year, you will need to report that income on an annual tax return. Things to consider: 1  If you work in a job that does remit part of your pay for taxes, some of those taxes have already been paid.