What force do you need to exert on the rope if you want to pull the box with a constant acceleration of 0.50 m/s2 up the plane

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6

the answer is kevlar

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.