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posted by  scm03f on 11/3/2009 11:33:57 PM  |  status: Live  |  Earned Karma: 70

density

Course Textbook Chapter Problem Needs by
N/A N/A N/A N/A 11/11/2009 at 10:00:00 AM
Question Details:
An object weighing 330 N in air is immersed in water after being tied to a string connected to a balance. The scale now reads 255 N. Immersed in oil, the object appears to weigh 295 N.
(a) Find the density of the object.
1 kg/m3

(b) Find the density of the oil.
2 kg/m3
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(SME)
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posted by Kevin_08 on 11/3/2009 11:51:30 PM  |  status: Live
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Response Details:
I hope this helps! Best of luck with the rest of your coursework.
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posted by scm03f on 11/4/2009 11:03:09 PM  |  status: Live
Asker's Rating: N/A-Posted by Person Asking Question   
Response Details:
i cant even see some of the letters or symbols are too tiny to read so that i can plug in
(SME)
posted by christina.S on 11/4/2009 11:32:04 PM  |  status: Live
Asker's Rating: Helpful   
Response Details:
Given :
.
             W   =  330  N   ;   Wwater   =   255  N  ;  Woil  =  295  N
.
(a)    Density of object is :
.
        Dobject   =   DWater  *  [ 1 - (Wwater  / W ) ] - 1   
.
                      =  ( 1000 )  *  [ 1 - (255 / 330 ) ] -1  
.
                      =   4400  kg / m3  
.
(b)    Density of oil is :
.
          Doil   =   Dobject  *  [ 1 - (Woil  / W ) ] - 1   
.
                   =  4400  * [ 1 - ( 295 / 330 ) ] -1 
.
                   =   41.48  *  103     kg / m3  
.
Hope this helps u!
Pupil
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posted by scm03f on 11/5/2009 5:52:08 PM  |  status: Live
Asker's Rating: N/A-Posted by Person Asking Question   
Response Details:
the object was right but the oil was not!
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