Assume it takes 7.00 minutes to fill a 30.0 gal gas tank. (a) calculate the rate at which the tank is filled in gallons per second. (b) determine the rate at which the tank is filled in cubic meters per second. (c) determine the time interval, in hours, required to fill a 1.00 m^3 volume at the same rate. ( 1 us gal = 231 in.^3)

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.