Give reasons:
1. A balloon collapses when air is removed from it.
2. A tall building has wide foundations
Answers
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Explanation:
a balloon expands only when air Is blowed inside it,and if the air is removed from it , it will gradually collapse
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Answer:
1. When air is removed from the balloon, the pressure inside the balloon (which was due to air in it) is much less than the atmospheric pressure outside and hence the balloon collapses.
2. A tall building has wide foundations because to balance the centre of gravity. Buildings have a wide Foundation so that the pressure exerted by it less. When area increases pressure is decreases.
hope that helps :)
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