3. Pete needs to be at work for 10.00am. He leaves his house at 7.00am and drives to the gym which is 12.5 miles away. Pete spends 1 hour in the gym then drives 30minutes the remaining

9 miles to work.

a. What average speed in, miles per hour, must Pete drive at to ensure he is not late for

work?(3 marks)

I

Iam on that question know can you tell me the answer i am realy strruglingasap

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.

  bv hb ouj bv gv gtrxr