the sum of two force inclined to each other at an angle is 18N and their resultant which is perpendicular to the smaller force is 12N find the forces and angle between them?

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.

The anwser is: wave a has a greater pitch and frequency.

It is increased due to the doppler effect. (apex)

Ansa new gas is observed in the form of bubbles;