1. Find the distance (in meters) traveled by a radio wave in 21.5 h.
2. A radar wave that is bounced off an airplane returns to the radar receiver in 3.78 x 10–5, How far (in miles) is the airplane from the radar receiver?
3. How long does it take for a police radar beam to travel to a car and back if the car is 0.245 mi from the radar unit?
4. How long does it take for a pulse of laser light to return to a police speed detector after bouncing off a speeding car 0.274 mi away?
5. How long does it take for a radio signal to travel from the earth to a communications satellite 22,500 mi above the surface of the earth?
6. Find the wavelength of a radio wave from an AM station broadcasting at a frequency of 1230 kHz.
7. Find the frequency of a radio wave if its wavelength is 46.5 m.