The schoolchildren set up this experience with two identical paper balloons: one of them they filled with hot air in the school room, and the other outside, where it was cool. Which of the two balls has a large buoyancy force?
Due to the large temperature difference, the difference between the weight of the air in the volume of the ball and the weight of the gas filling the ball will be greater in the case when the ball is filled with warm air outside, respectively. and the buoyancy force acting on this ball will be greater.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.