(a)[2]
Compare the scalar and vector quantities.
(b)
A small sphere's radius is found from its volume. The sphere is placed in water, causing some of the water to be displaced into a measuring cylinder, as shown in Fig. 1.1. The displaced-water volume is measured as $(28.0 \pm 0.5)\,\text{cm}^3$. Calculate:
(b(i))[1]
the sphere’s radius, in cm.
(b(ii))[2]
the percentage uncertainty in the sphere’s radius.