A 985 kg car is driving on a circular track with a constant speed of 25.0 m/s. The circumference of the track is 2.75 km. a. Why does a passenger in the car feel pulled toward the outside of the circular path?

b. Describe the force that keeps the car moving in a circle.

c. Find the centripetal acceleration of the car.

d. Find the centripetal force on the car.

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)