Which of the following results was evidence that the proton was part of an atom's nucleus?
A). The alpha particles passed straight through the foil.
B). A few hits of alpha particles were noticed on the sides of the film.
C). The alpha particles stayed stuck to the gold foil.
D). The alpha particles shot at the gold foil straight back off the foil and stuck the front side of the film.

Mass (kg) force (n) 5 25 10 50 15 75 20 100 a student was trying to find the relationship between mass and force. he placed four different masses on a table and pulled them using a spring scale. the table shows the different masses used in the experiment and the force required to pull each mass. the student concluded that more force was required to pull heavier objects. what comment would you make regarding his conclusion? a) no clear relation can be observed between mass and force from the data. b) there is a direct proportion between the mass and force listed in the table. c) gravity should have been taken into account while performing the experiment. d) there is an inverse proportion between the mass and force listed in the table.

Asher cycles 12 miles in 16 hours. what is his speed?

Which is the best predictor of the radioactive nature of an isotope? o the proton-to-electron ratio the neutron-to-proton ratio o the neutron-to-electron ratio the electron-to-proton ratio