There is a rope that is 80 ft long and the rope is attached to two posts. Each posts are 50 ft tall. since the rope isn't fully stretched the distant from the lowest point of the rope to the ground is 10 ft. what is the distance between the two posts.

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