Question:
(i) The height of Mount Everest is 8848 m. Write it in standard form.
(ii) The speed of light is 300000000 m/sec. Express it in standard form.
(iii) The distance from the earth to the sun is 149600000000 m. Write it in standard form.
Solution:
(i) The height of the Mount Everest is 8848 m.
In standard form, we have:
$8848=8.848 \times 1000 \mathrm{~m}=8.848 \times 10^{3} \mathrm{~m}$
(ii) The speed of light is 300000000 m/s.
In standard form, we have
$300000000=3 \times 100000000 \mathrm{~m} / \mathrm{s}=3 \times 10^{8} \mathrm{~m} / \mathrm{s}$
(iii) The Sun - arth distance is 149600000000 m.
In standard form, we have:
$149600000000=1496 \times 100000000=1.496 \times 1000 \times 100000000=1.496 \times 10^{3} \times 10^{8}=1.496 \times 10^{11} \mathrm{~m}$