# HW12_SIM - Phys1010 Homework 12 SIM 1 Using the EMF...

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Phys1010 Homework 12 SIM 1) Using the EMF Simulation, adjust the transmitter so that it is in sinusoidal mode and the electrons are oscillating up and down at a regular frequency. This is how radio waves are broadcast. Set it so that both “display the curve” and the “radiated field” boxes are checked. a) What does the curve represent? The line of electrons being sprayed off of the antenna that then cause the receiver electron to move. The path that an electron will follow due to the electromagnetic wave. The evenly spaced electrons moving up and down between the two antennae. The field of negative charges that are moving through space. The strength and direction of the force that would be exerted by the electromagnetic wave on an electron. b) With the frequency set at the mid-point of the slider and the amplitude set at the mid-point of the slider, approximately how many grid marks is the wavelength of the wave (use the pause button and step button as you need to in order to get a good measure, and round to the nearest whole grid mark)? If the amplitude is increased, the wavelength decreases increases stays the same c) Use the simulation to evaluate the following statements. True False If the oscillation frequency of the transmitting electron decreases, the oscillation frequency of the electron in the receiver is instantaneously affected. True False The electron in the receiving antenna oscillates at a lower frequency than the electron in the transmitting antenna because of the distance between the antennas. True False If the frequency of oscillation increases but the amplitude of the electron oscillation remains the same, then the electron in the transmitting antenna is experiencing larger accelerations (recall what you know about acceleration and motion). True

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HW12_SIM - Phys1010 Homework 12 SIM 1 Using the EMF...

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