Which sample of oxygen gas contains molecules with the largest average speed?
1. sample a with a temperature of 250 k.
2. sample b with a temperature of 273 k.
3. sample c with a temperature of 273 k.
4. sample d with a temperature of 298 k.

in advance.

An ideal otto cycle has a compression ratio of 8. at the beginning of the compression process, air is at 95 kpa and 27°c, and 750 kj/kg of heat is transferred to air during the constant-volume heat-addition process. assuming constant specific heats at room temperature, determine (a) the pressure and temperature at the end of the heat-addition process, (b) the net work output, (c) the thermal efficiency, and (d) the mean effective pressure for the cycle. (4390 kpa, 1730 k; 423 kj/kg; 56.4%; 534 kpa)

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?

You have 80 g of 60oc water and 80 g or 10oc water. what is the final temperature when the two are mixed? explain.