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

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

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(i) `1kg=10^(3)g,1m=10^(2)cm`
`:.1kgm^(2)s^(-2)=10^(3)gxx10^(4)cm^(4)xxs^(-2)=10^(7)gcm^(2)s^(-2)`
(ii) 1 light year `=9.46xx10^(15)m`
Let us take `9.46xx10^(15)` approximately as `10^(16)` m
`:.1m=1/(10^(16))ly=10^(-16)1y`
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