Physics
General
Easy
Question
A liquid takes 5 minute to cool from 
to 
. The temperature of the surrounding is 
. What is the time it will take to cool from 
?
- 9 min
- 5 min
- 12 min
- 6 min
The correct answer is: 9 min
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. The terminal velocity of the bubble is about..........,m/s
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The terminal velocity of fall of lead shots in the cylindrical vessel is influenced by the nearness of the walls of the vessel. Hence the velocity in formula is divided by a factor 
. Where r is the radius of the lead shots and the radius of the vessel. This is called
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