An air-standard dual cycle has a compression ratio of 9. at the beginning of compression, p, 100 kpa, t, 300 k, and v 14 l. the heat addition is 22.7 kj, with one half added at constant volume and one half added at constant pressure. determine (a) the temperatures at the end of each heat addition process, in k. (b) the net work of the cycle per unit mass of air, in kj/kg. (c) the thermal efficiency. (d) the mean effective pressure, in kpa

Imagine that you have two balloons (or, better yet, actually inflate two balloons, if possible). create static electricity around one of the balloons by rubbing it against your hair or your sweater and then bring that balloon close to the other balloon, which has not been charged. try this with at least one other object—and for variety in the discussion, avoid using an object already described by your classmates. then, for your initial post to the discussion, answer the following questions: what happened with the two balloons?