Answer:
(a). The maximum electric field strength is 0.0133 V/m.
(b). The maximum magnetic field strength in the electromagnetic wave is 
(c). The wavelength of the electromagnetic wave is 
Explanation:
Given that,
Maximum potential = 4.00 mV
Distance = 0.300\ m
Frequency = 1.00 Hz
(a). We need to calculate the maximum electric field strength
Using formula of the potential difference




(b). We need to calculate the maximum magnetic field strength in the electromagnetic wave
Using formula of the maximum magnetic field strength in the electromagnetic wave

Put the value into the formula


(c). We need to calculate the wavelength of the electromagnetic wave
Using formula of wavelength


Put the value into the formula


Hence, (a). The maximum electric field strength is 0.0133 V/m.
(b). The maximum magnetic field strength in the electromagnetic wave is 
(c). The wavelength of the electromagnetic wave is 