A 6450kg gorilla slides down the side of a 20m tall mountain at 47degrees. If the coefficient of kinetic friction is 0.23, what is the net work done on the gorilla? 80kg Keoni Mabini is pulled 33m up makakilo hill at 45 degrees by Brayden Pfister with aforce of 200 N. If the coefficient of kinetic friction between the Keoni’s okole and the hillis 0.11, what is the change in her kinetic energy?

Anilov rolls Brayden’s 3.5kg ball 10m. If she exerts force of 12N and the coefficient offriction between the ball and the ground is 0.31, what is the ball’s final speed?

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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