A Newtonian incompressible liquid is contained between two parallel metal plates separated by 10–3 m (see figure). A stress of 5 Pa is required to maintain the upper plate in motion with a constant speed of 2 ms-1 in the horizontal direction relative to the bottom plate.
The viscosity of liquid contained between the plates is ____ × 10–3 Pas (answer rounded off to 1 decimal place).
