state two experiences that make u think that air exerts pressure
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Air filled inside a baloon
(i) Balloons and balls can be used only when they are inflated with air. When balloon is overfilled with air it bursts due to excessive air pressure.
(ii) Compressed air is used in the brake system for stopping trains.
(ii) Compressed air is used in the brake system for stopping trains.
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when we hod the glass inverted on the top of a cardboard and again when we invert the tumbler the glass doesn't fall of. this shows that air exerts pressure. and also whil drinking with the help of straw
(i) Balloons and balls can be used only when they are inflated with air. When balloon is overfilled with air it bursts due to excessive air pressure.
(ii) Compressed air is used in the brake system for stopping trains.
(ii) Compressed air is used in the brake system for stopping trains.
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(ii) Compressed air is used in the brake system for stopping trains.