Aperson takes a trip, driving with a constant speed of 89.5 km/h, except for a 22.0-min rest stop. if the person’s average speed is 77.8 km/h, (a) how much time is spent on the trip and (b) how far does the person travel?

How many dots must be added to the symbol to properly represent a standard nitrogen ion? a) 1 b) 3 c) 5 d) 8

How will the system respond to a temperature increase?

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.