While visiting the Albert Michelson exhibit at Clark University, you notice that a chandelier (which looks remarkably like a simple pendulum) swings back and forth in the breeze once every T. 6.9 seconds Randomized Variables T= 6.9 seconds Part (a) Calculate the frequency of oscillation (in Hertz) of the chandelier.
Numeric : A numeric value is expected and not an expression
Part(b) Calculate the angular frequency of the chandelier in radiane
Numeric: A numeric value is expected and not an expression

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?