Which city has already hosted the olympic games three times?

Distinguish between a transverse wave and a longitudinal wave.

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

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?