If the resultant of two equal forces is 2 times the single force, find the angle between them.

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?

If the new moon happens on january 15th, what shape will it be on february 6th?

Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius