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Ever wondered why ships don't sink? Or why the chimney of a lantern has holes near the bottom?
Curious Topper readers posed these questions in our Topper's Ask The Expert and our panel of experts received an answer within 72 hours!
Subject: Physics
Q. What special qualities are given to the ship so that it can float on water?
Posted by: Neelimathegr8
A. The density of iron is more than the density of water. But still the ship does not sink because it has a large volume. So it displaces a large volume of water which provides a large upthrust. This upthrust balances the weight of the ship and helps the ship to float.
Subject: Chemistry
Q. Why does the chimney of a lantern have holes near the bottom?
Posted by: Shridhar94
A. The chimney of a lantern has holes near its bottom to allow proper combustion of fuel.
Subject: Biology
Q. What prevents the sudden increase in temperature during the day on earth?
Posted by: Chetan45dude
A. The atmosphere prevents the sudden increase in temperature during the day. This is because air is a bad conductor of heat.
Subject: Mathematics
Q. Why is pie irrational?
Posted by: ShreyaaK
A. 22/7 is only approximate value of pie. So, it should not be confused with pie being a rational number just because it can be expressed as p/q form with q not equal to zero and p and q being integers.
Also the decimal representation of pie is non terminating, non repeating which is how it qualifies to be a member of the irrational numbers set.
Moreover, pie is the ratio of the circumference 2 pie r of a circle of radius r with the diameter 2 pie.
