Question

Vertical Stretches and Compressions

Answer 1

Compressive stress and strain occur when forces contract an object, causing its shortening. Examples include the columns supporting a heavy box and the top surface of a shelf loaded with heavy books.

Step-by-step explanation:

Compressive stress and strain occur when forces are contracting an object, causing its shortening and resulting in a negative change in length. For example, if a heavy box is placed on a table supported by three columns, the columns experience compressive stress due to the weight of the box. Similarly, when a long shelf is loaded with heavy books, the top surface of the shelf experiences compressive stress while the bottom surface experiences tensile stress.

Answer 2

(What roles should the world community and the UNO play to prevent destructive wars in the days ahead in the pretext of the lesson learned from untold loss from the Second World War? Write.)