Which describes the characteristics of a liquid?
a. it has no fixed volume or shape.
b. it has a fixed volume and shape.
c. it has high energy and expands to fill the container.
d. it has a fixed volume and varied shape.

According to newton’s first law of motion, which force is expected to cause a body to accelerate?

30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve

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?