Two identical pucks collide elastically on an air hockey table. Puck 1 was originally at rest; puck 2 has an incoming speed of 9 m/s and scatters at an angle of 55° with respect to its incoming direction. What is the velocity (magnitude and direction) of
puck 1 after the collision?
Measure the direction counterclockwise from the positive c-axis.
Help on how to format answers: units
degrees.

Describe different biomes. what are some adaptations that organisms (plants or animals) must have to live in each biome?

Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?

To understand the electric potential and electric field of a point charge in three dimensions consider a positive point charge q, located at the origin of three-dimensional space. throughout this problem, use k in place of 14? ? 0. part adue to symmetry, the electric field of a point charge at the origin must point from the origin. answer in one word. part bfind e(r), the magnitude of the electric field at distance r from the point charge q. express your answer in terms of r, k, and q. part cfind v(r), the electric potential at distance rfrom the point charge q. express your answer in terms of r, k, and q part dwhich of the following is the correct relationship between the magnitude of a radial electric field and its associated electric potential ? more than one answer may be correct for the particular case of a point charge at the origin, but you should choose the correct general relationship. a)e(r)=dv(r)drb)e(r)=v(r)rc)e(r)=? dv(r)drd)e(r)=? v(r)r