Asnail can move approximately 0.30 meters per minute. how many meters can the snail cover in 15 minutes? (needs: what your looking for and a solution)

You are looking for how far the snail goes in 15 minutes.  In order to find this, you multiply .3 by 15 because the snail goes .3 meters in one minute, and there are 15 total minutes.  So, you get 4.5 meters in 15 minutes.  Hope this helps!!

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.