On a perfect fall day 20oc you are hovering at low altitude, Ask an Expert

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On a perfect fall day (20oC) you are hovering at low altitude in a hot-air balloon, accelerating neither upwards nor downwards. The total weight of the balloon, including its load and hot air in it, is 20,000 Newton.

a. Calculate the weight of the displaced air?

b. Calculate the volume of the displaced air?

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