Which of the following is a correct comparison of a compact fluorescent lamp and incandescent light bulbs?
a. cfls use more energy than incandescent light bulbs
b. incandescent light bulbs produce less heat energy than cfls
c. cfls produce more light and use less energy than incandescent light bulbs
d. incandescent light bulbs indirectly release less carbon emissions than cfls

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)