9. Bicycle tubes burst when they are overfilled. Why?

when the tube is filled to its maximum, the pressure inside the tube becomes greater than the pressure outside. the air molecules do not find enough space to move around and thus the tube burst out.

Explanation:

this is due to the force the person is exerting on the bike and also the area of the bike tube

tropical storm katrina, and it made landfall between miami and fort lauder-dale, florida, as a category 1 hurricane (a storm that, on the saffir-simpson scale, exhibits winds in the range of 74–95 miles per hour [119–154 km per hour]). sustained winds of 70 miles per hour (115 km per hour) lashed the florida peninsula, and rainfall totals of 5 inches (13 cm) were reported in some areas. the storm spent less than eight hours over land. it quickly intensified when it reached the warm waters of the gulf of mexico.

this should answer you're question

answer conditional instability;