Final answer:
To express the given measurements in scientific notation: 0.0000000000372 g is 3.72 x 10^-11 g, and 45,000,000,000 km is 4.5 x 10^10 km. When converted into SI base units, these become 3.72 x 10^-14 kg and 4.5 x 10^13 m, respectively.
Step-by-step explanation:
To write measurements in scientific notation and convert them into SI base units, we follow the steps of expressing the number in the form of a digit term (between 1 and 10) multiplied by a power of ten, then convert the unit to the base SI unit.
Measurements given:
(a) 0.0000000000372 g
(b) 45,000,000,000 km
In scientific notation:
(a) 0.0000000000372 g = 3.72 x 10-11 g
(b) 45,000,000,000 km = 4.5 x 1010 km
Converting to SI base units:
(a) There are 1,000 grams (g) in a kilogram (kg), so 3.72 x 10-11 g is equivalent to 3.72 x 10-14 kg.
(b) There are 1,000 meters (m) in a kilometer (km), so 4.5 x 1010 km is equivalent to 4.5 x 1013 m.