A pyramid has a square base and four faces, which are equilateral triangles. A charge Q is placed on the center of the base of the pyramid. What is the net flux of electric field ΦE,1ΦE,1 emerging from one of the triangular faces of the pyramid? Express your answer in terms of Q and the permittivity of free space, 0.

How are calculation for velocity and speed different

Ryan is examining the energy of the particles in a bar of gold. what is ryan most likely studying?

Sally turns on her cellular telephone to speak to her friend who is located thousands of miles away. which of the following best describes how such a telephone is able to transmit and receive information? a. the cellular telephone transmits, receives, and encodes information using only sound waves. b. the cellular telephone transmits, receives, and encodes information using only electromagnetic waves. c. the cellular telephone transmits information by electromagnetic waves to a receiver which then encodes them and produces sound. d. the cellular telephone transmits information by sound waves to a receiver which then encodes them and produces electromagnetic waves.