Physics, 03.03.2020 00:36, jakiyahporter0817
Light waves are described as electromagnetic waves by Maxwell's equations and are characterized by three vector quantities: electric field, magnetic field, and the speed and direction of propagation of the energy of the wave. Which of the following statements is true about the relationship between the three vector quantities mentioned above for electromagnetic waves? a. The E field and B field oscillate parallel to one another and parallel to the propagation vector, as well. b. Whereas the E and B fields are always perpendicular to one another, the E field is at all times either parallel or anti-parallel to the propagation vector. c. The E and B fields oscillate perpendicular to one another, and both are orthogonal to the propagation vector. d. Whether the E field, B field, and propagation vector are parallel or orthogonal to one another depends on the polarization of the light wave.
Answers: 2
Physics, 21.06.2019 22:20, CM0
Acave rescue team lifts an injured spelunker directly upward and out of a sinkhole by means of a motor-driven cable. the lift is performed in three stages, each requiring a vertical distance of 11.0 m: (a) the initially stationary spelunker is accelerated to a speed of 4.80 m/s; (b) he is then lifted at the constant speed of 4.80 m/s; (c) finally he is decelerated to zero speed. how much work is done on the 78.0 kg rescue by the force lifting him during each stage
Answers: 2
Physics, 22.06.2019 17:30, ciaotaylor
Aball thrown by ginger is moving upward through the air. diagram a shows a box with a downward arrow. diagram b shows a box with an upward arrow. diagram c shows a box with a downward and upward arrow equal in size. diagram d shows a box with a downward and upward arrow with the downward arrow larger in size. which force diagram represents the forces on the ball? you may neglect the effects of air resistance.
Answers: 3
Light waves are described as electromagnetic waves by Maxwell's equations and are characterized by t...
Mathematics, 26.08.2019 00:30
Spanish, 26.08.2019 00:30
Mathematics, 26.08.2019 00:30
Biology, 26.08.2019 00:30
Biology, 26.08.2019 00:30
Physics, 26.08.2019 00:30