3. How many seconds would it take a radio wave to trovel
from the planet Mars to
Earth when they are the
closest?
(Closest distance from Mars
to Earth = 54.6 million
kilometers).

Which statement best summarizes the importance of ernest rutherford’s gold foil experiment? it proved that all of john dalton’s postulates were true. it verified j. j. thomson’s work on the atomic structure. it showed that an electron circles a nucleus in a fixed-energy orbit. it showed that a nucleus occupies a small part of the whole atom.