Physics

Problem

Find the result of

(6.0\times10^{-4}+2.5\times10^{-5}) \times (4.0\times10^{2})

and select the properly normalised answer in scientific notation (two significant figures). a)

25 \times 10^{-3}

2.5 \times 10^{-1}

3.4 \times 10^{-1}

2.5 \times 10^{-2}