top button
Flag Notify
    Connect to us
      Site Registration

Site Registration

Two identical barrels with identical valves, first barrel is filled with hot water & second one with cold water...

+1 vote
121 views

Two identical barrels with identical valves at the bottom are placed on a table so that the water can freely flow to the ground. The first barrel is filled with hot water, the second one is filled with cold water. If we open the valves at the same time, which one of the barrels will be empty first?

posted Dec 10, 2018 by anonymous

Share this puzzle
Facebook Share Button Twitter Share Button LinkedIn Share Button

1 Answer

0 votes

Viscosity of water decreases markedly with increasing temperature. When the viscosity decreases, the flow resistance decreases. So for the same driving force, that is the pressure drop per unit length, the water flow rate will be higher. So the barrel with hot water will be empty first.

answer Dec 14, 2018 by Hanifa Mammadov



Similar Puzzles
0 votes
There are two plastic jugs filled with water. How could you put all of this water into a barrel, without using..........

There are two plastic jugs filled with water.
How could you put all of this water into a barrel, without using the jugs or any dividers and still tell which water camr from which jug?

0 votes
We have shown you a regular water barrel. Without using any measuring device can you check if barrels is more...........

We have shown you a regular water barrel. Without using any measuring device can you check if barrels is more than half filled or less than half filled ?

enter image description here

0 votes
Three identical tanks as per picture filled to the top with water, then which tank would contain the most water?

Following Picture have three identical tanks. If they are filled to the top with water, then which tank would contain the most water?

enter image description here

0 votes
I want to fill my bucket using both cold and hot water. I have two taps........How Long will it take to fill the bucket?

I want to fill my bucket using both cold and hot water.
I have two taps for both cold and hot water. The hot water tap fills the bucket in exact 6 hours and the cold water tap fills the bucket in exact 4 hours.
I turn both of them simultaneously but I forgot to turn off another tap which removes the water out of the bucket. This tap can empty the bucket in 12 hours.

How Long will it take to fill the bucket?

0 votes
You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this.....

You’re out on the water and see a boat filled with people. You look away for a second and look back again, but this time you don’t see a single person on the boat. Why? Hint: The boat did not sink.

...