Question

give reason.if a ballon filled with air and it's mouth untied is released with its mouth in the downword direction it moves upward.

Answer 1

as in the balloon the air is packed tightly and inner pressure is more than atmospheric pressure and when it is left open the pressurised air inside is released
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Answer 2

Answer:

1. when we gas filled by

gas practical exam pressure on the walls of the container in gas is filled.

for example=when a balloon is inflated the air inside it expands, there by extracting pressure on the balloon walls.

• 2 mouth = if a balloon filled with compressed air and its mouth and today is released with its mouth in the downward direction the balloon moves in the upward directions because the present in the balloon rushes out in the downward directions the equal and opposite reaction of downward going air forces the balloons upward.