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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.

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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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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User Xtreak
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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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User Abhishek Gupta
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