contestada

What is the wavelength of a radio photon from an ""AM"" radio station that broadcasts at 1400 kilohertz? and What is its energy?
a) 214 m, 8.9e-19 J
b) 214 m, 1.5e-15 J
c) 214 km, 8.9e-19 J
d) 214 km, 1.5e-15 J