2. Compare the torsional rigidities of the following sections a) a hollow tube 30 mm outside diameter and 1.5 mm thick
b) the same tube split along its length with a 1 mm gap
c) an equal leg angle section having the same perimeter and thickness as (b)
d) a square box section with side length 30 mm and 1.5 mm wall thickness
e) a rectangular solid bar, side ratio 2.5 to 1. having the same metal cross-sectional area
as the hollow tube. Compare also the maximum stress es arising in each case.​

answer:

All this is to say that new technologies develop quickly and continuously, and society is used to and adapts quickly to these constant innovations. ... Medical technology is always improving, leading to lower infant mortality, cures for diseases, and many more improvements in quality of life.

Explanation:

hope this helps mark me as brainiest pls

answer:

apple

Explanation:

Teacher : GOOD AFTERNOON PARENTS GOOD AFTERNOON CHILDREN

ONE OF DA BOIS WHO ARE SUPPOSED TO BE OFF BUT HAD TO COME : SHUT THE FU,CK UP

TEACHER : DO YOU NEED TO BE EXUSUDE

KID AGAIN: NO BI,T,CH

Explanation: