the @nd law of thermo prhibits it.
The efficiency of an ideal ( carnot engine ) = 1 - ( T2 / T1 )
where T2 = temp of the sink
and T1 = temp of the source
now since T2 can never be 0 ( abs zero is not possivle to achieve ) , he efficiency of an ideal ( carnot engine ) can never be 1 ( i, e, 100% )
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