RIDDLE: In a glass of water...
By remaster74
@remaster74 (4064)
Greece
October 27, 2006 12:11pm CST
In a glass of water, just in the middle of it, there is an ice cube. Knowing that the room temperature is normal, nor hot or cold, say how long is it gonna take to the ice cube to melt and vanish.
Just another riddle, that we had to answer in a Physics test at school.
2 people like this
12 responses
@remaster74 (4064)
• Greece
28 Oct 06
Excellent! Note that from 32 kids in class only 2 were the ones that found the solution and the prof took us out for dinner.
@hindol_86 (232)
• India
28 Oct 06
i just cant understand how can an ice cube be present just at the middle of a glass of water...it'll float on the water surface...now about melting of ice...the rate will depend on the latent heat of fusion of ice... considering the mass of ice cube as 'm' ,the room temperature as 't',the specific heat of ice as 's' and the latent heat of fusion as 'l' the time 'T' taken by ice to melt is T=(m*s*t)/l...i think this will be the time taken by the ice cube to melt...
@remaster74 (4064)
• Greece
28 Oct 06
Ok. The answer is the first phrase of your response. Excellent (+) for you
@moneymind (10510)
• Philippines
1 Dec 06
what do you mean by the 'middle of it', because ice is lighter than water so the ice cube is most likely be floating. it seems to me that you need to give me more details about it. greetings. : )
@remaster74 (4064)
• Greece
23 Jan 07
This is the right answer. The ice cube is floating. Can't be at the middle of the glass.
@achilles7 (1276)
• India
29 Oct 06
thank you for the riddle. It is already answered.So I do not try to aswer.
@remaster74 (4064)
• Greece
29 Oct 06
Thank you for posting anyway. I think it's cool using "achilles" as a username, although you're from India. Do you know anything about him?
@remaster74 (4064)
• Greece
27 Oct 06
Good effort but this is not the answer. Caution! This is a riddle and a matter of physics at the same time. Thanks for trying anyway!
@remaster74 (4064)
• Greece
3 Nov 06
I think you're right. But this is the clue to solve the riddle. Ice cubes float, they don't stuck in the middle
@remaster74 (4064)
• Greece
27 Oct 06
As I wrote to friend rolcam above, I think reading the riddle more carefully would be advisable. On the other hand I'm telling you that the answer is very simple and your mind can never guess. Thanks for the effort.
@ramitemporalis (442)
• United States
28 Oct 06
The room temperature is normal but that doesnt mean the temperature of the water is normal. Is the water really really cold or really really hot?
