Acheerleader waves her "pom-pom" in shm with an amplitude of 18.0cm and a frequency of 0.850hz. find, a) the maximum magnitudes of acceleration and velocity. b) the acceleration and speed when the pom-pom’s coordinate is x = 9.00cm. c) the time required to move from equilibrium position directly to a point 12.0cm away.

Explain what makes a passenger in a turning car slide toward the door. critical thinking

Phase changes are chemical changes. true or false

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