Homework Help: physics

Posted by rahul on Monday, April 2, 2012 at 10:33am.

A spacecraft circling the moon at a distance of 384,000 km from the
earth communicates by radio with a person on earth. How much time
elapses between the sending and receiving of a signal?

physics - drwls, Monday, April 2, 2012 at 10:38am
Divide the distance by the speed of light, 3.00*10^5 km/s.

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