What is the mass of a mallard duck whose speed is 8.9 m/s and whose momentum has a magnitude of 11 kg. m/s?

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.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it