He-ne lasers are often used in physics demonstrations. they produce light of wavelength 633nm and a power of 0.650mw spread over a cylindrical beam 1.35mm in diameter (although these quantities can vary).part awhat is the intensity of this laser beam? i=/m^2part bwhat is the maximum value of the electric field? emax=/mpart cwhat is the maximum value of the magnetic field? bmax= d

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Una carga puntual de 3 x 10-6 c se coloca a 12 cm de una segunda carga puntual de - 1,5 x 10-6 c. calcular la magnitud fuerza eléctrica entre las cargas

Lightning is an example of what phenomenon? a release of a large amount of energy an absorption of a large amount of energy a natural electric circuit a natural electric current