If you stood on Earth during its formation, during which it captured about 1.6 ✕ 1011 particles per second, and watched a region covering 170 m2, how many impacts would you expect to see in an hour? (Notes: The surface area of a sphere is 4?r2. Hint: Assume that Earth had its current radius of 6,378 km.

If you stood on Earth during its formation, during which it captured about 1.6 ✕ 10¹¹ particles per second, and watched a region covering 170 m², how many impacts would you expect to see in an hour? (Notes: The surface area of a sphere is 4?r². Hint: Assume that Earth had its current radius of 6,378 km.)