Take out a cooled bottle of water from refrigerator and keep it on a table. After some time you notice a puddle of water around it.Why ?

When a bucket full of water is rotated,water does not fall from it.Why?

One day in the morning, Ramesh filled up 1/3 bucket of hot water from geyser, to take bath. Remaining 2.3 was to be filled by cold water (at room temperature) to bring mixture to a comfortable temperature. Suddenly Ramesh had to attend to something which would take some time say 5 - 10 minutes before he could take bath. Now the he had two options: (i) fill the remaining bucket completely by cold water and then attend to the work, (ii) first attend to the work and fill the remaining bucket just before taking bath. Which option do you think would have kept water warmer ? Explain.

You have been given two cans with capacities 9 and 5 liters respectively. There is no graduation marks on the cans nor is eye estimation possible. How can you collect 3 litres of water from a tap? ( you are allowed to pour out water from the can). If the cans had capacities 8 and 6 litres respectively, could you collect 5 liters?

A hemi-spherical tank of radius 2 m is initially full of water and has an outlet of 12c m^2 cross-sectional area at the bottom. The outlet is opened at some instant. The flow through the outlet is according to the law v(t)=0.6sqrt(2gh(t)), where v(t) and h(t) are, respectively, the velocity of the flow through the outlet and the height of water level above the outlet and the height of water level above the outlet at time t , and g is the acceleration due to gravity. Find the time it takes to empty the tank.

Why does water split on the floor disappear after some time?