What is the pressure in atmospheres (1.01 ' 10^5Pa) at the botoom of a 3-m swimming pool?

this allows people to make the best decision or pursue the best option. when alternatives are weighed using their advantages and disadvantages, the option whose disadvantages outweigh the advantages (based on a qualitative or quantitative analysis) are shunned while those whose advantages outweigh their disadvantages are pursued.  

temp rises, and expansion

nah.   i'm just sleepy.

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.