A radio transmitter continuously radiates 500kW of electromagnetic power. Assume that all this energy comes at the expense of the transmitter’s rest mass and take the speed of light in vacuum to be 3.0×108ms−1.
(i) Calculate the total energy radiated by the transmitter in one day (24\,h).
(ii) Determine the corresponding decrease in the transmitter’s mass during this period. Express your answer in micrograms (μg).