Which are uses of lasers? pick all that apply. a. scanning a bar code on a price tag for a shirt b. creating a magnified image of the moon cutting an iron bar into two pieces c. reshaping a cornea to improve vision d. making a leaf appear larger so its veins are visible

Using the work energy theorem. what is the velocity of a 850kg car after starting at rest when 13,000j of work is done to it.

True or false when elements combine to form a mixture, the resulting chemical properties may be very different from those of the elements that make it.

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?