any science physics expert in in need of your help please just help me we can make a deal check the questions that I posted and I can give u my email because I can't post here if u know these just tell me so I can give you my email I need a lot of help I will truly appreciate it thanks

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.

the only real purpose of sputnik 1 was to beat the us into space. we were getting close to launching a useful satellite, explorer 1 - which launched on january 31, 1958. the ussr had to beat that, so they launched sputnik 1 on october 4, 19

answer a fan shaped mass of sediment deposited at the base of a mountain front do to an abrupt change in stream gradient;