I have some conceptual question in the fluid mechanics topics which has been bugging me for quite some time now.
1) When wax is rubbed on cloth why does the cloth become waterproof
2) A weightless baloon is filled with water. What will be the apparent weight when weighed in water.
3) A man is sitting on a boat which is floating in a pond. If he drinks some of the water in the pond What will be the net level of water in the pond change
The Attempt at a Solution
For 2 i think it will decrease because of the upward upthrust.