query: When one blows up a latex balloon, why does it get easier to blow once it has a little air in it (after 1 or 2 breaths)?
positive_passages.docid: 18676
positive_passages.text: Why is filling a balloon from your mouth much harder initially?
negative_passages.docid: 6080
negative_passages.text: Is this kids experiment a legitimate way to show that air has mass?
negative_passages.docid: 100410
negative_passages.text: Why does a container with fluid make different sounds at different fluid levels?
negative_passages.docid: 54247
negative_passages.text: Why does separating plastic from a cough drop create flashes?
negative_passages.docid: 126222
negative_passages.text: Why does air remain a mixture?
negative_passages.docid: 149117
negative_passages.text: Why do starships 'fall' when they blow up?
negative_passages.docid: 117184
negative_passages.text: How to understand "It takes a little bit of getting used to the idea..."?
negative_passages.docid: 89594
negative_passages.text: Pressure and altitude
negative_passages.docid: 13197
negative_passages.text: Just curiosity about the 'LaTeX' name
negative_passages.docid: 9394
negative_passages.text: Why does rubbing feet against sheets create a spark?
negative_passages.docid: 153568
negative_passages.text: How to model a rising helium balloon?
negative_passages.docid: 29858
negative_passages.text: Why does the air flow faster over the top of an airfoil?
negative_passages.docid: 76062
negative_passages.text: Why is LaTeX3 taking so long to come out?
negative_passages.docid: 82082
negative_passages.text: The velocity of the flowing coming out of the balloons?
negative_passages.docid: 78293
negative_passages.text: Why does the air we blow/exhale out from our mouths change from hot to cold depending on the size of the opening we make with our mouth?
negative_passages.docid: 139385
negative_passages.text: What is the microscopic picture for warm air rising?
negative_passages.docid: 5633
negative_passages.text: Why does blowing on a candle put it out but sucking doesn't?