Example: The range of the FM frequencies for US radio is 87.1 MHz → 107.9 MHz. Determine the wavelength range for these radio frequencies. (Recall that speed $v = f\lambda$. $v_{sound} = 350 m/s$ $v_{EM} = 300,000,000 m/s$) Example: The range of the AM frequencies for US radio is 530 kHz → 1720 kHz. Determine the wavelength range for these radio frequencies. (Recall that speed $v = f\lambda$. $v_{sound} = 350 m/s$ $v_{EM} = 300,000,000 m/s$) 8. Explain the difference(s) between longitudinal waves and transverse waves. Give a few examples of each type of wave propagation.
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Step 1
We are given the frequency ranges and the speed of electromagnetic waves ($v_{EM} = 300,000,000 m/s$). We will use the formula $v = f\lambda$, where $v$ is the speed, $f$ is the frequency, and $\lambda$ is the wavelength. Show more…
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Radio Wave AM-radio signals are broadcast at frequencies between $550 \mathrm{kHz}$ (kilohertz) and $1600 \mathrm{kHz}$ and travel $3.0 \times 10^{8} \mathrm{m} / \mathrm{s}$ a. What is the range of wavelengths for these signals? b. FM frequencies range between $88 \mathrm{MHz}$ (megahertz) and $108 \mathrm{MHz}$ and travel at the same speed. What is the range of FM wavelengths?
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(I) AM radio signals have frequencies between 550 $\mathrm{kHz}$ and 1600 $\mathrm{kHz}$ (kilohertz) and travel with a speed of $3.0 \times 10^{8} \mathrm{m} / \mathrm{s}$ . What are the wavelengths of these signals? On FM the frequencies range from 88 $\mathrm{MHz}$ to 108 $\mathrm{MHz}$ (megahertz) and travel at the same speed. What are their wavelengths?
(a) Calculate the wavelength range for AM radio given its frequency range is 540 to $1600 \mathrm{kHz}$. (b) Do the same for the FM frequency range of 88.0 to 108 MHz.
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