Acircuit is

a.
the incomplete path of an electrical current.
b.
an open path of an electrical current.
c.
a switch that interrupts an electric current.
d.
the complete path of an electrical current.

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.

0.93xc=0.93x3x10^8m/s

2.54cm is 1 inch

360seconds i 1 hr

distance = 150m

displ = root (50 ^2 + 100^2)

root(2500+10000)

root 125000

snell's law

refractve index = sin incidence / sin refraction