Consider 2kg of helium gas, initially at 260 K, in an insulated container. A paddle wheel adds 800 kj of work to the gas. Determine the final temperature of the gas. Assume constant specific heat at 300K

An ideal otto cycle with air as the working fluid has a compression ratio of 8. the minimum and maximum temperatures in the cycle are 300 k and 1340 k. use constant specific heats at room temperature to determine (a) the amount of heat transferred to the air during the heat- addition kj/kg, (b) the thermal efficiency, and (c) the thermal efficiency of a carnot cycle ope limits. process, in rating between the same temperature