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Q. The density of mercury is $13600 kg m ^{-3}$. Its value in CGS system will be

Physical World, Units and Measurements

Solution:

$13600 kg m ^{-3} =13600 \times 1000 g \times(100 cm )^{-3}$
$=\frac{136 \times 10^{5}}{10^{6}} g cm ^{-3}=13.6 g cm ^{-3}$