Some physical quantities have extremely large magnitudes.

These

__extremely large and small values__can be written in standard form ( scientific Notation ) so that it is neat, simple and easy to read.

a) Diameter of the earth is

= 130 000 000 metres

= 1.3 x 10

^{7}

b) Length of Paramyxoviruses

= 0.000014 m

= 1.4 x 10

^{-5 }

Polish my skills :

Write the following quantities in standard form :

a. The length of virus = 0.00 000 008 m

b. Red light wavelength = 0.00 000 067 m

c. the mass of a ship = 75 000 000 kg

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