What is the wavelength associated with the electromagnetic waves created your ra

Question

What is the wavelength associated with the electromagnetic waves created your radio station, 105.7 FM, which operates at a frequency of 105.7 MHz? (Assume the waves travel through a vacuum. Remember that mega = 1 million.) a. 0.01 m b. 0.003 m c. 2, 840 m d. 0.352 m e. 2.84 m When two tuning forks are sounded at the same time, six beats are heard every second. If one of the tuning forks has a frequency of 160 Hz, what is the frequency of the other tuning fork? a. 156 Hz b. 157 Hz c. 160.17 Hz d. 163.3 Hz e. 166 Hz

Explanation / Answer

par 1 )

lambda = c/f

c = speed of light

f = 105.7 x 10^6 Hz

lambda = 2.84 m

part 2 )

beat frequncy = |f1-f2|

6 = |f1-f2|

f1 = 160 Hz

f2 = 166 Hz or 154 Hz

166Hz

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