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A radar used to detect the presence of aircraft receives a pulse that has reflected off...

A radar used to detect the presence of aircraft receives a pulse that has reflected off an object 5.09×10−5 s after it was transmitted. What is the distance in kilometers from the radar station to the reflecting object?

During normal beating, the heart creates a maximum 1.98 mV potential across 0.276 m of a person’s chest, creating a 1 Hz electromagnetic wave. What is the maximum magnetic field strength in the electromagnetic wave? Give your answer in picotesla (10-12T).

What is the frequency, in 1015 Hz, of the 231.8 nm ultraviolet radiation used in laser eye surgery?

What is the wavelength of 121 MHz radio waves used in an MRI unit?

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