A race car has a mass of 650 kg. The engine of the car applies 850 N of force, and the frictional force of the road is 50.0 N. If the race car starts from rest, how far does it travel in 4.0 sec?

Which statement about covalent bonds is true

An electric current in a wire will push or pull on a permanent magnet. which statement best explains how an electric current creates an electromagnetic force on another magnet?

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?