The height of a water manometer is 20cm when used to measure the pressure of a gas. what would be the height of a manometer whose liquid is glycerine of density 1.26g/cm3?Take g=10Nkg-1​

Not what goes around on earth but the universe too.

Ibelieve the answer is b

If the heat engine is a perfect carnot cycle engine, thenefficiency = (t2-t1)/t2   where t1=temperature of cold reservoir ( ° k) = 135            t2=temperature of hot reservoir ( ° k)   = 325thereforeefficiency = (t2-t1)/t2 = (325-135)/325 = 0.5846 = 58%  note: this is the theoretical maximum efficiency of a perfect heat engine.   real-life engines do not achieve this value.