A beam 6.0m long and weighing 4kg rest on supports p and q placed left and right 1.0 metre from each of the beam. Weights of mass 10kg and 8kg are placed near p and q respectively, on each end of the beam. Calculate the reaction at p and??

d eras and periods

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.

b. a lightning bug, plug of grass, and a worm