When forces acting on a body are equal and opposite the body will be in a state of​

Imagine you are standing in the antarctic during the southern hemisphere summer. the sky is clear and blue. there are no clouds in the sky. your shadow is cast on the icy ground. what is the color of the shadow?

How many neutrons does element x if it’s atomic number is 28 and its mass number is 87

An atom that has gained or lost electrons is called an _