1) what is the pressure that is exerted at a depth of 20 meters above sea level?
2) a child releases a balloon, which slowly rises to the sky,
if the balloon has a diameter of 20 cm when the child releases it, what is its diameter at a height of 1000m, 2000m and 5000m
suppose the balloon is very flexible and can ignore surface tension

their crystal patterns have been disrupted by stress

float.

archimedes' principle

denser than water sinks in water.

denser than mercury would sink in it

the design of a ski jumping suit involves a trade-off between giving the skiers lift to get higher jumps and ensuring the skier does not face a lot of drag before the jump itself. an expansive suit may to lift the skier higher, but at the same time, it will also increase the air resistance. higher air resistance as the skier goes down the slope limits the speed of the jump. a big suit also increases the risk of losing balance or control, especially if there's a strong gust of wind. while technologically enhanced suits a lot, clothing is not the only factor in a ski jumper’s success. gathering speed while skiing down the slope, ensuring good speed on the ramp, and maintaining good body posture and form in the air all contribute to a ski jumper's success.