Suppose your are looking at a yellow fish in a fish tank. the tank is next to a window. describe the path light takes in order for you to see the fish, starting at the sun and ending at your eyes

Difference between series and parallel circuits

Why does gravity have a lesser than grater effect on higher altitudes?

An alpha particle with kinetic energy 12.5 mev makes a collision with lead nucleus, but it is not "aimed" at the center of the lead nucleus, and has an initial nonzero angular momentum (with respect to the stationary lead nucleus) of magnitude l = p0 b, where p0 is the magnitude of the initial momentum of the alpha particle and b=1.40×10−12 m. (assume that the lead nucleus remains stationary and that it may be treated as a point charge. the atomic number of lead is 82. the alpha particle is a helium nucleus, with atomic number 2.) what is the distance of closest approach?