(a) Express the following values in terms of prefixes.
(I) 0.62 x 10⁴ g (II) 2 x 10⁷ m. (III) 4 x 10⁵ s


(b) Express the following values in terms of scientific notation,
(I) 0.000036. (II) 140000, (III) 107000000

Ans. [(a) (I) 6.2 kg. (11) 20 Mm. (111) 40 μs]
[(b) (I) 3.6x10⁻⁵ (II) 1.4x10⁵ (III) 1.07 x 10⁸ ]


Theory: 

Solution:

(a) Express the following values in terms of prefixes.
(I) 0.62 x 10⁴ (II) 2 x 10⁷ m (III) 4 x 10⁵ s

(I) 0.62 x 10⁴. 

 0.62 x 10⁴ g = 6.2 x 10³ g = 6.2 kg

(II) 2 x 10⁷ m. 

2 x 10⁷ m = 2 x 10 x 10⁶ m = 20 x 10⁶ m = 20 Mm

(III) 4 x 10⁵ s

4 x 10⁻⁵ s = 4 x 10¹ x 10⁻¹ x 10⁻⁵ s = 40 x 10⁻⁶ s

(b) Express the following values in terms of scientific notation,
(I) 0.000036 (II) 140000 (III) 107000000

(I) 0.000036

0.000036 = 3.6 x 10⁻⁵

(II) 140000

140000 = 1.4 x 10⁵

(III) 107000000

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