In which situation did the car achieve the greatest efficiency? (Assume the cars all have the same mass.)(1 point) a car that traveled 80 kilometers on 5.0 liters of gas

a car that traveled 90 kilometers on 6.0 liters of gas

a car that traveled 50 kilometers on 4.0 liters of gas

a car that traveled 70 kilometers on 5.0 liters of gas

Air enters a compressor operating at steady state at 1.05 bar, 300 k, with a volumetric flow rate of 93 m3/min and exits at 12 bar, 400 k. heat transfer occurs at a rate of 15.5 kw from the compressor to its surroundings. assuming the ideal gas model for air neglecting kinetic potential energy effects, determine the power in put in kw.

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In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final