If an object on Earth weighs 100N what is its weight in pounds?

What will a positive and a negative charge do if they are separated from each other?

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?

Ways that industry and agriculture use physical properties to separate substances