the foreman shouts at John to hurry up and he increases his pushing force to 50N. Calculate the wheelbarrow's acceleration​

i need the answer to this too but idk it ; -;

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.