A sphere of mass 1.15 kg is suspended from a string in a room in Osmond Lab. The sphere is accelerated upwards by pulling on the string to which the sphere is attached. Its speed increases from 2.11 m/s to 4.74 m/s in a time of 1.68 s. The tension is constant during this time. Calculate the tension in the string.

Which of the following are considered noble gases? a. bromine b. neon c. argon d. chlorine

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

Which of the following are forms of phase changes a. freezing b. condensation c. heating d. exchanging