Question

. A wooden block is tied to a metallic rod of mass
100 g and immersed completely in water. When
the displaced water is collected in a measuring jar,
the volume of the liquid displaced is found to be
400 ml. If the density of the metallic rod is 5 g cm3,
and the mass of the wooden block is 300 g, deter-
mine the density of the wooden block.
A student was given a task to find the density of
a cube whose mass and side are 100 g and 5 cm,​

Answer 1

Answer:

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Step-by-step explanation:

Mass of the metallic rod = 100 g

the Volume of the metallic rod + volume of wooden block = 400 ml

the Density of the metallic rod = 5 g cm−3

the Volume of the metallic rod

=mass of the metallic rod density of the rod =81=n31,n3=8,n=2 Volume of wooden the block = 400−20=380cm3

Mass fo the wooden block =massvolume=300380=0.79 g cm−3