50 points :
A block of iron has dimensions 2 m × 0.5 m × 0.25 m. The density of iron is 7.8 g cm ^2. Find the mass of the block.
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4
the volume of the wooden block= l×b×h
=2m×0.25m×0.10m
=0.05m^3
relative density = density of the object/density of water
0.6=density of the object/1000kg/m^3
density of the object=0.6×1000
=600kg/m^3
density of the object= mass/ volume
600kg/m^3=mass/0.5m^3
mass= 600kg/m^3×0.05m^3
mass=30kg
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Answer:
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Explanation:
Volume = l × h × w
= 2 × 0.5× 0.25 cm cube
= 0.25cm cube
Mass = Volume × Density
=0.25× 7.8
= 1950 g = 1.95 kg
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