b)Brian is flying in a hot air balloon. He is flying at an altitude of 20 km from land. Brian wants to travel
further up high. Should he increase the burner flame or decrease it? State your answer with reason.
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Answer:
he should increase the burner flame .
Explanation:
we know that hot air rises and cold air descends.
a less hot air also descends and a slightly hotter air ascends . so by increasing the burner flame he is making the air Inside the balloon more hotter and as the air becomes hotter it becomes less dense and starts ascending more higher.
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