deadgirl1 deadgirl1

02-03-2017
Physics

contestada

Your friend Nader is standing 400,000 meters away. If you send a message to him using radio waves, how long will it take for him to receive it? Round to four decimal places.

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osprey2015 osprey2015

02-03-2017

speed of a radio wave in vacuum/air is 3x10^8 m/s. so, if speed is also distance/time, then time = distance/speed = 400,000/300,000,000 = ????

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