Lucy Hawkins, Fran Eardley, Stuart Lloyd and, Gemma Young Solutions for Chapter: Moments, Pressure and Density, Exercise 12: End of Chapter Review

Calculate the density of a lump of balsa wood. It has a mass of $13 \mathrm{g}$ and volume of $100 {\mathrm{cm}}^3$ in $\raisebox{1ex}{$\mathrm{g}$}\!\left/ \!\raisebox{-1ex}{${\mathrm{cm}}^3$}\right.$.

Write only the numerical value without any units in the given box.

Calculate the density of a lump of ebony wood. It has a mass of $60 \mathrm{g}$ and a volume of $50 {\mathrm{cm}}^3$ in $\raisebox{1ex}{$\mathrm{g}$}\!\left/ \!\raisebox{-1ex}{${\mathrm{cm}}^3$}\right.$.

Write only the numerical value without any units in the given box.

Calculate the density of a lump of Steel. It has a mass of $156 \mathrm{g}$ and volume of $20 {\mathrm{cm}}^3$ in $\raisebox{1ex}{$\mathrm{g}$}\!\left/ \!\raisebox{-1ex}{${\mathrm{cm}}^3$}\right.$.

Write only the numerical value without any units in the given box.

Calculate the density of a lump of ice in $\raisebox{1ex}{$\mathrm{g}$}\!\left/ \!\raisebox{-1ex}{${\mathrm{cm}}^3$}\right.$. It has a mass of $8.9 \mathrm{kg}$ and a volume of $10000 {\mathrm{cm}}^3$.

Write only the numerical value without any unit in the given box.

Calculate the density of a lamp of osmium. It has a mass of $15.82 \mathrm{kg}$ and a volume of $700 {\mathrm{cm}}^3$ in $\raisebox{1ex}{$\mathrm{g}$}\!\left/ \!\raisebox{-1ex}{${\mathrm{cm}}^3$}\right.$.

Write only the numerical value without any unit in the given box.

Calculate the density of a lamp of lithium. It has a mass of $106 \mathrm{g}$ and a volume of $200 {\mathrm{cm}}^3$ in $\raisebox{1ex}{$\mathrm{g}$}\!\left/ \!\raisebox{-1ex}{${\mathrm{cm}}^3$}\right.$.

Write only the numerical value without any unit in the given box.

Mandeep decided to investigate how much pressure will exert on different shoes.

What does Mandeep keep the same?

Mandeep decided to investigate how much pressure will exert on different shoes.

Shoes do not have a regular shape. What could Mandeep do to work out their area?