1.

You can measure stress directly with an instrument the way you measure temperature with a thermometer.

2.

There can be only one normal stress component acting on the surface of an imaginary cut.

3.

If a shear stress component on the left surface of an imaginary cut is upward, then on the right surface it will be downward.

4.

If a normal stress component puts the left surface of an imaginary cut in tension, then the right surface will be in compression.

5.

The correct way of reporting shear stress is ? = 70 kips.

6.

The correct way of reporting positive axial stress is ? = +15 MPa.

7.

1 GPa equals 10 ⁶ Pa.

8.

1 psi is approximately equal to 7 Pa.

9.

A common failure stress value for metals is 10,000 Pa.

10.

Stress on a surface is the same as pressure on a surface as both quantities have the same units.

1.

False. Stress is an internal quantity that can only be inferred but cannot be measured directly.

2.

True. A surface has a unique normal, and normal stress is the internally distributed force in the direction of the normal.

3.

True. Shear stress is an internally distributed force, and internal forces are equal and opposite in direction on the two surfaces produced by an imaginary cut.

4.

False. Tension implies that the normal stress pulls...