If the specific latent heat of ice is 340 000 J/kg, and the specific latent heat of steam is
2 300 000 J/kg and the specific heat capacity
of water is 4200 J/kg K, calculate the heat
needed to change 2 kg of ice at 0°C to steam
at 100 °C.

Which is not one of the major climate zones? question 3 options: rain forest polar tropical temperate

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.

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?