Aspring with a spring constant of 40n/cm has a cage attached to one end. how much work does the spring force do on the cage if the spring is stretched from its relaxed length by 7.6 mm?

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.