Calculate the change in time for each quarter of the track. Record the change in time in Table E of your Student Guide.

The change in time for the first quarter is seconds.

The change in time for the second quarter is seconds.

The change in time for the third quarter is seconds.

The change in time for the fourth quarter is seconds.

Sorry i don’t know what to do

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.

Idk just need points