What characteristics determine how easily two substances change temperature? Check all that apply.
1.) volume of the two substances in contact

2.) amount of time the two substances are in contact

3.) area in contact between the two substances

4.) specific heat of the material that makes up the substances

5.) density of the two substances in contact
(edge 2o2o​)

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?