What will be the restoring force if a spring with a spring constant of 45 newtons per meter is pulled 0.03 meters in the downward direction?

If an atom contains 11 protons in its nucleus, predict the element with the atomic number and electronic configuration. will the number of electrons remain the same during the chemical reaction in such an atom? explain.

Place me with this question is my last question

Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?