A high school baseball team in Dallas travels south to Austin to participate in a tournament. The trip from Dallas to Austin is about 322 kilometers. The trip requires
about 3.5 hours to complete on a school bus. Which of the following best represents
the VELOCITY of the bus?
92 km/h
12.7 km/h
112.7 km/h South
92 km/h South

Two kilograms of air within a piston–cylinder assembly executes a carnot power cycle with maximum and minimum temperatures of 800 k and 300 k, respectively. the heat transfer to the air during the isothermal expansion is 60 kj. at the end of the isothermal expansion the volume is 0.4 m3. assume the ideal gas model for the air. determine the thermal efficiency, the volume at the beginning of the isothermal expansion, in m3, and the work during the adiabatic expansion, in kj.