What is the kinetic energy of an object that has a mass of 12 kilograms and moves with a velocity of 10 m/s?

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?

In science and physics what is the standard unit of measure for speed?

Acoil suspended freely, points in some direction when no current is passed through it . can you tell what will happen when a current is passed though it?