Where is the exact location of the maximum tension bending stress for the following beam, assuming the BMD is drawn to scale and the cross section is symmetrical?

Remember the positive axis for beam bending is vertically down down and a positive moment equates  to the beam have a sagging/concave deflected shape while a negative moment equates to the beam have a hogging deflected shape.

For the beam shown, when bending about the horizontal axis and using the bending stress formula σ=My/I, what value of 'y' would you use if you wanted to calculate:

Exclude units from your answers

The bending stress is linearly distributed through a beam's cross section?

Which of the sections below are considered symmetrical about the X-X axis (horizontal bending axis)?

Multiple answers may be correct.

What is resilience?

Магнитный азимут

Расстояние по скорости  звука

Дальность по тысячной

Длина шага

Дальность глазомером