Question

(4) The diameter of the corona virus is 0.000000120 m. Express the given number in standard form
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Answer 1

Answer:

$1.2\times {10}^{ - 8}$

Step-by-step explanation:

see the answer above

Answer 2

Answer:

1.2×10⁻⁷ m

Step-by-step explanation:

we can express the diameter of 0.000000120 m as (120/1000000000)m

hence, (120/1000000000) = 120 × 10⁻⁹

                                            = 120×(100/100)×10⁻⁹  [ multiply and divide 100]

                                            = (120/100)×100×10⁻⁹  

                                            = 1.2×10²×10⁻⁹

                                            = 1.2×10⁽²⁺⁽⁻⁹⁾⁾

                                             = 1.2×10⁽²⁻⁹⁾  [as (+*-)=-]

                                             = 1.2×10⁻⁷ m