A particle of mass 0.2 kg is attached to one end of a string of lenght 80cm. the particle moves in a horizontal circle with the angular velocity of 1.5 rad/s with the string inclined at an angle to the vertical. find the angle. and take [g=10m/s]. find the angle (theta)

If a simple machine reduces the strength of a force, what must be increased?

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

How much energy will be transferred to your eardrum while listening to this sound for 1.0 min?