A cube of plastic 1.2 X 10^-5 km on a side has a mass of 1.1g What is its density in g/cm^3?
回答 (1)
2015-09-11 6:23 am
Side of the cube
= (1.2 × 10⁻⁵ km) × (1000 m/km) × (100 cm/m)
= 1.2 cm
Volume of the cube
= (1.2 cm)³
= 1.728 cm³
Density
= Mass / Volume
= (1.1 g) / (1.728 cm³)
= 0.64 g/cm³ ...... (Ans)
= (1.2 × 10⁻⁵ km) × (1000 m/km) × (100 cm/m)
= 1.2 cm
Volume of the cube
= (1.2 cm)³
= 1.728 cm³
Density
= Mass / Volume
= (1.1 g) / (1.728 cm³)
= 0.64 g/cm³ ...... (Ans)
收錄日期: 2021-04-18 00:15:46
原文連結 [永久失效]:
https://hk.answers.yahoo.com/question/index?qid=20150910220757AAIKYCe