State the number of significant figures in the following:
(a) 0.007 m2
(b) 2.64 × 1024 kg
(c) 0.2370 g cm–3
(d) 6.320 J
(e) 6.032 N m–2
(f) 0.0006032 m2
(a) 0 .007 m2 has one significant figure. (b) 2.64 x 1024 kg has three significant figures. (c) 0.2370 g cm-3 has four significant figures. (d) 6.320 J has four significant figures. (e) 6.032 N has four significant figures. (f) 0.0006032 m2 has four significant figures.