3. A spring is stretched 0.06 m past its relaxed point, and this requires 19.5 N of force. How much potential energy is stored in the spring? (A) 0.0975 J (B) 0.585 J (C) 1.17 J (D) 325 J

Answer is in the photo. I can only upload it to a file hosting service. link below!

cutt.ly/zxt1ipy

what experimental evidence led scientists to change from the previous model to this one?

a few of the positive particles aimed at a gold foil seemed to bounce back.

the colors of light emitted from heated atoms had very specific energies.

experiments with water vapor showed that elements combine in specific proportions.

cathode rays were bent in the same way whenever a magnet was brought near them.