Physics 9702 · AS & A Level · Density and pressure
Density and pressure — practice question
For a metal sphere, the mass $m$ is expressed by $m = \frac{\pi d^3 \rho}{6}$, with $\rho$ representing the metal’s density and $d$ representing the sphere’s diameter. The density and mass data are shown in Fig. 1.1.
(a)[1]
Define density in words.
(b(i))[1]
Calculate the sphere’s diameter $d$.
(b(ii))[3]
Use your answer in (i) together with the data in Fig. 1.1 to find the value of $d$, including its absolute uncertainty, to an appropriate number of significant figures.
Worked solution & mark scheme
This 5-mark question has a full step-by-step worked solution and mark scheme. One marking point: “mass divided by volume gives density” …