Exercise 2.1

Express the following numbers in scientific notation: (i) \( 2000000 \) \[2000000 = 2.0 \times 10^6\] (ii) \( 48900 \) \[48900 = 4.89 \times 10^4\] (iii) \( 0.0042 \) \[0.0042 = 4.2 \times 10^{-3}\] (iv) \( 0.0000009 \) \[0.0000009 = 9.0 \times 10^{-7}\] (v) \( 73 \times 10^3 \) \[73 \times 10^3 = 7.3 \times…