A piece of iron when immersed in water taken in a can displaces 25 mL of water. Its mass is 195 g. Find the density of iron in CGS units?
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Given:
The volume of water displaced = 25 ml
The mass of iron piece = 195 gm = 0.195 gm
To Find:
The density of iron in Kg/m³.
Calculation:
- According to Archimede's principle:
The volume of iron cube = The volume of water displaced
⇒ The volume of iron cube = 25 ml = 25 × 10⁻⁶ m³
Density = Mass/Volume
⇒ ρ = 0.195/25 × 10⁻⁶
⇒ ρ = 0.0078 × 10⁶
⇒ ρ = 7800 kg/m³
- So, the density of iron is 7800 kg/m³.
= 7.8 g.cm³
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