Answer
a. 150 m
b. 75 m
Work Step by Step
Use equation 22–4, $c=\lambda f$
Calculate the AM radio wavelength.
$$\lambda=\frac{c}{f}=\frac{3.00\times10^8m/s }{1\times10^6Hz}=300m$$
a. A half-wave antenna would be about 150 m long.
b. A quarter-wave antenna would be about 75 m long.
