A block in the shape of a rectangular parallelepiped has dimensions of 20 × 10 × 5 cm and a density of
| September 18, 2021 | education
A block in the shape of a rectangular parallelepiped has dimensions of 20 × 10 × 5 cm and a density of ρ = 1.3 g / cm3. Find the mass of the bar. Give your answer in kilograms, rounded to one decimal place.
To calculate the value of the mass of the specified bar, we use the formula: m = ρb * V.
Constants and variables: ρb – the density of the specified bar (ρb = 1.3 g / cm3 = 1300 kg / m3); V is the volume of the bar (V = 20 x 10 x 5 cm = 10 ^ 3 cm3 = 10 ^ -3 m3).
Let’s make a calculation: m = ρb * V = 1300 * 10 ^ -3 = 1.3 kg.
Answer: The mass of the indicated bar is 1.3 kg.
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