Most car owners drive their cars an average of 12,000 miles a year assuming a 20 miles a gallon gas consumption rate determine the amount of fuel consumed by 150 million car owners daily

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid