In order to produce the radio waves needed to send a text message to the nearest tower and the intended receiver of a text, there must be a fluctuation in the electromagnetic field. These fluctuations are produced by the back and forth flow of electrons electron dance in a conductor like a copper wire within the phone's circuit . The antenna of your devices transmit these disturbances in the that eventually reach the antenna of the tower which decode the text and send it to the intended receiver utilizing the same process. A False
B false

Alinearly polarized electromagnetic wave has an average intensity of 196 w/m^2. this wave is directed towards two ideal polarizers (in real polarizers, transmission is also effected by reflection and absorption). polarizer a is oriented with its transmission axis at an angle of θ_1=20.8∘ with the incident electric field. polarizer b has its axis at an angle of θ_2=63.0∘ with the incident electric field. what is the average intensity of the wave after it passes through polarizer a? what is the average intensity of the wave after it passes through polarizer b? suppose that the two polarizers a and b are interchanged. what would the average intensity be after passing through both polarizers?

In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge