Radio station KBOB broadcasts at a frequency of 85.7 MHz on your dial using radio waves that travel at 3.00 × 108 m/s
Since most of the station's audience is due south of the transmitter, the managers of KBOB don't want to waste any energy broadcasting to the east and west. They decide to build two towers, transmitting in phase at exactly the same frequency, aligned on an east-west axis. For engineering reasons, the two towers must be AT LEAST 10.0 m apart. What is the shortest distance between the towers that will eliminate all broadcast power to the east and west?
12.3 m
You might also like to view...
Standing Sound Waves: An organ pipe closed at one end and open at the other end has two successive harmonics with frequencies of 2170 Hz and 2790 Hz. What is the fundamental frequency of the pipe?
Fill in the blank(s) with the appropriate word(s).
What does the constellation Cygnus consist of?
A) All the bright stars that lie inside the illustration of a swan on star maps. B) All of the stars and other objects that lie inside the agreed upon boundary lines. C) The stars inside of the Summer Triangle. D) About 9 stars connected by two imaginary lines. E) The star Deneb.
According to the universal law of gravitation, if you triple the distance between two objects, then the gravitational force between them
A) increases by a factor of 9. B) decreases by a factor of 9. C) decreases by a factor of 3. D) increases by a factor of 3.
To avoid toxic vapor, one can use a(n) ____________ barometer to measure pressure
a. mercury b. Galileo c. aneroid d. Torricelli