Imagine that our sun were magically and suddenly replaced by a black hole of the same mass (1 solar mass). How would earth's orbit change?.

Need asap ‼️ 20 pts which gravitational force field diagram is drawn correctly? (answers in pictures below)

With the simplified model of the eye, what corrective lens (specified by focal length as measured in air) would be needed to enable a person underwater to focus an infinitely distant object? (be careful-the focal length of a lens underwater is not the same as in air! assume that the corrective lens has a refractive index of 1.62 and that the lens is used in eyeglasses, not goggles, so there is water on both sides of the lens. assume that the eyeglasses are 1.90

The law of reflection states that the angle of reflection is equal to the angle of