Question

On the basis of charles law, explain how hot air balloon rises up.

Answer 1

Dear Student..... Charles's Law says that the volume of a gas is directly related to the temperature of that gas, When the air in the balloon gets hot enough, the net weight of the balloon plus the hot air is less than the weight of the same volume of cold air, and the balloon starts to rise. When the gas in the balloon is allowed to cool, the volume of hot air decreases. Cold air moves in through the hole, the weight of balloon plus air increases, and the balloon starts to sink... Regards