Because alpha particles are positive charged. And they bounce back because of the electromagnetic force between them and the gold foils protons.
True: Friction depends on the types of surfaces involved and how hard the surfaces push together.
Answer:
D. the wind picking up dust and carrying it
Explanation:
Erosion is a process in which an agent transfer the top soil to another region, thereby exposing the lower soil. These agents have the ability to move the top layer of soil and deposit it at another place. The major agents in this case are; a running or flowing body of water and wind.
Therefore, the change to the Earth's surface that is an example of erosion is the wind picking up dust and carrying it. Thereby exposing the lower layers.
It is advisable to be at least 15 feat away from the track in order to prevent accidents from happening. It is because even though you are not on the track but you're just close to it without any any distance, it could still lead to accidents because trains are fast and it could still affect those who are near to it. It could drag the car, leading to serious accidents.