can any1 help me =)

  • 0 votes

Matt decides to make a bell

he mixes copper and tin to make the metal for the bell

he has 270 kg of copper and 0.01 m^3 of tin

the density of copper is 9000 kg/m^3

work out the density of the bell

show all workin

Posted Thu 14th June, 2012 @ 14:21 by waqar

5 Answers

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density = mass/volume

9000kg/m^3 = 270/volume

volume of copper = 0.03m^3

ummm...you cannot work anything more out from this question unless you have the density of the tin or the mass of tin at least...waqar...are you sure you are not missing some information from the question??

Answered Thu 14th June, 2012 @ 15:47 by Namita
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oh yeah soz a frgt 1 tin

the density of tin 7300 kg/m^3

oooppps ;)

Answered Thu 14th June, 2012 @ 16:25 by waqar
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ahhhhh...right...let me see what i can do now xD ***

so...we started off with this >

density = mass/volume

9000kg/m^3 = 270/volume

volume of copper = 0.03m^3

now...

7300kg/m^3 = mass/0.01m^3

mass of tin = 7300*0.01 = 73kg

Using all these things you can work out the TOTAL MASS and the TOTAL VOLUME of the bell...

TOTAL MASS = 270kg + 73kg = 343kg

TOTAL VOLUME = 0.03m^3 + 0.01m^3 = 0.04m^3

SOOOO...

Density of Bell = 343kg/0.04m^3 = 8575kg/m^3   <<<<<<<< ANSWER!!! xD ***x

Hope this explains it clearly xD ***

Answered Fri 15th June, 2012 @ 10:35 by Namita
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thnx bbe ;)

Answered Fri 15th June, 2012 @ 13:22 by waqar
  • 0 votes

u r welcome xD ***

Answered Fri 15th June, 2012 @ 14:13 by Namita