A floating wooden block is taken out of the water and lowered to float in a vessel with kerosene:
a) Has the force of gravity acting on the bar changed?
b) Has the Archimedes force acting on the bar changed?
c) What has changed when the bar was transferred from water to kerosene?
a) The mass of the bar has not changed, which means that the force of gravity acting on it has not changed either.
b) Because the bar floats, then the force of Archimedes is equal to the force of gravity. This means that the strength of Archimedes has not changed.
c) the depth of immersion of the bar in kerosene increased, because the density of kerosene is less than the density of water.
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.