Determine the density of an iron bar weighing 78 g, if its length is 0.5 cm, width 20 mm, height 1 dm.
| December 14, 2020 | education
Given:
m-78g
x-1dm
y-2cm
z-0.5cm
Find: p =?
SI: x-10cm
Decision:
Body volume:
V = xyz = 10cm * 2cm * 0.5cm = 10cm (cubed)
Body density:
p = m / v = 78/10 = 7.8 g / cm (cubed)
Answer: p = 7.8 g / cm (cubed)
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