David rowed a boat upstream for three miles and then returned to point he started from. the entire journey took four hours. the speed of the stream is one mile per hour. find david's speed in still water. (hint: speed = distance ÷ time, upstream speed = speed of the boat – speed of the stream, and downstream speed = speed of the boat + speed of the stream)
david's speed in still water is miles per hour.
Answers: 1
Physics, 22.06.2019 04:00, binodkharal2048
Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.
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