7th grade
posted by Anonymous on .
Given a cube of density 8900kg/m3 and length side 10cm
Awhat is the nature of his cube?
Bfind the mass of the above cube?
Cfind the relative density of the cube?
Dusing gravity 10N/kg find its weight?

A What do you mean by the "nature" of a cube?
B Density x Volume
C Relative to what?
D If they are trying to teach you the relationship between mass and weight, they should teach you the correct value of g. On earth, it is 9.81 m/s^2 , not 10. It varies with location, planet and altitude.
Anyway, multiply mass (kg) by the N/kg number. 
Nature often means solid,
liquid or gas. Typical solids have high densities and this figure would make it a solid. It is the same density as copper.
Relative density is relative to water, unless the material is otherwise specified.
As no temperature is given then use 1000 kg m^3 for water, so the relative density is 8.9 (no units). 
10 cm long,10 cm wide,and 10 cm high