Asimple ideal brayton cycle uses argon as the working fluid. at the beginning of the compression, p1 = 15 psia and t1 = 70°f, the maximum cycle temperature is 1220°f, and the pressure in the combustion chamber is 150 psia. the argon enters the compressor through a 3 ft2 opening with a velocity of 200 ft/s. determine the rate at which entropy is generated by the cycle. the temperature of the source is the same as the maximum cycle temperature, and the temperature of the sink is the same as the minimum cycle temperature.

In a simplified model of the human eye, the aqueous and vitreous humors and the lens all have a refractive index of 1.40, and all the refraction occurs at the cornea, whose vertex is 2.60 cm from the retina. what should be the radius of curvature of the cornea such that the image of an object 40.0 cm from the cornea’s vertex is focused on the retina?

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?

Give an example in which the electrical energy changes to light energy