1.

The speed of light in vacuum is\[300,\text{ }000,\text{ }000\text{ }m{{s}^{-1}}\]. Express it in standard form.

A.  \[3.0\times {{10}^{8}}\,m{{s}^{-1}}\]  
B.  \[3.0\times {{10}^{10}}\,m{{s}^{-1}}\]
C.  \[3.0\times {{10}^{6}}\,m{{s}^{-1}}\]
D.  \[3.0\times {{10}^{12}}\,m{{s}^{-1}}\]
Answer» B.  \[3.0\times {{10}^{10}}\,m{{s}^{-1}}\]


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