Bob and Bill left school and walked at opposite direction. Bob walked at 28 m/min and Bill walked at 31 m/min. How far would they be apart
from each other in meters after 5 minutes?

Which of the following correctly describes the early view of catastrophism?

Distinguish between linear momentum and angular momentum

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?