Question

Step 1

(a)

According to molecular theory, the (particles) air inside the balloon pushes outward on each patch of rubber walls, exerting a small force perpendicular to that section of area.

These collisions occurs the entire balloon and it gives a definite shape to the balloon, the air outside pushes perpendicularly inward, but not quite strong.

Step 2

(b)

There is rubber on both top and bottom of the balloon, therefore the forces that acts on that rubber can cancel out, hence the balloon does not accelerate up or down.

Since t...

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