How many significant figures are contained in each of the following measurements?
(a) 38.7 g
(b) 2 x 1018 m
(c) 3,486,002 kg
(d) 9.74150 x 10-4 J
(e) 0.0613 cm3
(f) 17.0 kg
(g) 0.01400 g/mL