Problem 9.35: air enters the compressor of an ideal air-standard brayton cycle at 100 kpa, 300 k, with a volumetric flow rate of 5 m3/s. the turbine inlet temperature is 1400 k. for compressor pressure ratios of 6, 8, and 12, determine (a.) the thermal efficiency of the cycle. (b.) the back work ratio. (c.) the net power developed, in kw.

Work = force × a. work b. energy c. distance d. momentum

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?

The least penetrating form of radiation is