Which conclusion is based on the “gold foil experiment” and the resulting model of the atom?
(1) an atom is mainly empty space, and the nucleus has a positive charge.
(2) an atom is mainly empty space, and the nucleus has a negative charge.
(3) an atom has hardly any empty space, and the nucleus has a positive charge.
(4) an atom has hardly any empty space, and the nucleus has a negative charge.

Answer : Option 1) An atom is mainly empty space, and the nucleus has a positive charge.

Explanation : The gold foil experiment done by scientist Rutherford revealed that atoms are the smallest unit of any element which consists of large empty space in it with the nucleus was concentrated in the center of the atom with mostly positive charge around it and virtually contains all the mass of the atoms and there are also negatively charged electrons which revolves in orbits around the nucleus.

8 m/s because for him to get the same amount of energy as ray is putting out, bobby, who weighs half as much as ray, needs to run twice as fast.