Solution
= Solution
For a homogeneous dispersion $E(p)=A|p|^α$, the kinetic expression for pressure gives
$$
pV={1\over d}\sum_r\overline n_r,p_r\mathbin\cdot\nabla_pE(p_r)
={α\over d}\sum_r\overline n_rE_r.
$$
\b[Thus $pV=DE$ with $D=α/d$.]
= Solution
For a homogeneous dispersion $E(p)=A|p|^α$, the kinetic expression for pressure gives
$$
pV={1\over d}\sum_r\overline n_r,p_r\mathbin\cdot\nabla_pE(p_r)
={α\over d}\sum_r\overline n_rE_r.
$$
\b[Thus $pV=DE$ with $D=α/d$.]