I need help with this assignment, please. I'll just quote it as it appears in the book:
Calculate the weight force for a cube with an edge length of 2.0 cm made of the following material: a) ice b) sugar c) gold d) beech wood e) cork f) polystyrene
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A cube with edge length 2 cm has the volume V:
V = a^3 = (2 cm)^3 = 8 cm^3
The mass m is calculated to:
m = V * ρ
where ρ (rho) is the density of the material. You have to check it in a table or on the Internet.
e) Example cork:
https://de.wikipedia.org/wiki/Kork#Agencies
density ρ 100 – 220 kg/m3 = 100 to 220 g/l = 0.1 to 0.22 g/cm3
m =8 cm3 * 0.1 g/cm3 to (8 cm3 * 0.22 g/cm3) = 0.8 to 1.76 g
Weight Fg:
Fg = m * g = (0.8 to 1.76 g) * 9.81 m/s^2 = 7.85 to 17.27 N
Thank you for the detailed explanation!!! 🙂
Here is the table:
https://de.wikibooks.org/wiki/Table Collection_Chemie/_Dichte_fester_Staffe
You only have to convert it to your cube.