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back to boardWhat is test#5? Posted by AlMag 16 Jun 2007 14:12 Maybe, you know some tricks? Re: What is test#5? Posted by An 12 Jun 2009 16:15 input
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00:13:00
AC output
00:13:58
00:13:58
00:13:58
00:13:58
00:13:58
00:16:46 Re: What is test#5? Posted by kirill 18 Feb 2011 16:59 perhaps you meant this test?
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00:00:05 Re: What is test#5? Posted by Ade 20 Jan 2013 10:29 Thanks. Silly am I. Re: What is test#5? Posted by Donart 17 Nov 2013 14:19 my output WA5
00:13:58
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00:15:48
why 00:16:46? Can someone please explain this to me. Re: What is test#5? See, kettles number 1 - 5 will drink coffee at the same time (00:13:58) and only in this time kettle number 6 may begin to boil water for himself ..... He will need 2:48 seconds for that. Why 2:48 ? ...... because in this time 200 ml water will be in the kettle with 20 degrees .... but kettle number 6 want 100 degrees in the main kettle .... then we take:
deltaT = 100 - 20 = 80
C and P you know from statement
m = 200
using formula from statement (deltaT = P * littleT / C * m) we will take that
littleT = deltaT * C * m / P = 02:48 --- this is time that we need to boil water.
Result : 00:13:58 + 00:02:48 = 00:16:46 |
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