Ui
johanna makes the table below to organize her notes about centripetal forces
centripetal force
circular motion
a space station in orbit
a child in a swing
a ball on a string
which type of force should she place in the cell marked x?
o
tension
gravity
friction
o normal

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

Explain what happens at the saturation point when adding salt to water at room temperature.

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