Homeboy needs help again Improved stress management can be achieved by which of the following? (3 points)

Avoiding exercise and flexibility

Decreasing the amount of sleep each night

Increasing time spent studying and working

Planning regular physical activity

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.