1) In a polycrystalline material under a tensile load, the resolved shear stress is the same for all grains.

true/ false

2) A precipitation-hardened alloy with smaller precipitates spaced closely together will have a lower strength than one with larger precipitates that are more widely distributed throughout its microstructure.

true/ false

3) The ductility of a material increases with increasing temperature.

true/ false

4) Applied stresses are amplified to a greater degree when a material has small cracks rather than large cracks.

true/ false

5) The presence of impurity atoms always reduces a material's strength.

ture/ false