A 1200 kg car is heading due north at 14.0 m/s. it collides with an identical car heading due south at 14.0 m/s. what is the net momentum of the cars before the collision?

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?

What effects result when there is an impact between earth and an asteroid? check all that apply. a.massive flooding. b.extinction of many life forms.c.major earthquakes change in average global temperature.d. giant dust cloud

Directions: count the number of atoms. ar co2 na3po4 so3 nac2h3o2