What happens as a result of changing the number of protons in an atom? O The atom becomes an ion of the same element

O The atom becomes an isotope of the same element.

O The atom becomes a different element.

O Nothing changes.​

How does the image distance (di) of a convex lens compare with the image distance of a concave lens? a. the image distance of the convex lens is positive, and that of the concave lens is negative. b. both are negative for a virtual image. c. both are positive for a virtual image d. the image distance of the convex lens is negative, and that of the concave lens is positive.

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

If the textbook weighs 19.6 newtons on venus,what is the strength of gravity on venus?