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Convert (i) 1 kgm^(2)s^(-2) into gcm^(2)...

Convert (i) `1 kgm^(2)s^(-2)` into `gcm^(2)s^(-2)` and (ii) 1 m into light year

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`1 kgm^2s^-2 = 1000g xx (100 cm )^2s_-2`
=`10^7 gcm^2s^-2`
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