Heat q flows spontaneously from a reservoir at 404 k into a reservoir at 298 k. because of the spontaneous flow, 2740 j of energy is rendered unavailable for work when a carnot engine operates between the reservoir at 298 k and a reservoir at 245 k. find q.

The focal length of a relaxed human eye is approximately 1.7 cm. when we focus our eyes on a close up object, we can change the refractive power of the eye by about 16 diopters. (a) does the refractive power of our eyes increase or decrease by 16 diopters when we focus closely? explain. (b) calculate the focal length of the eye when we focus closely.