A bent tube is lowered into the stream as shown in the figure below. The velocity of the stream relative to the tube equal to v. The closed upper end of the tube located at the light h_(0) . To what height h will the water jet spurt ?
A boatman rows 1 km in 5 min along the stream and 6 km in 1 h against the stream. The speed of the stream is
A boatman takes twice as long to row a distance against the stream as to row the same distance with the stream.Find the ratio of speeds of the boat in still water and the stream.
A man takes twice as long to row a distance against the stream as to row the same distance in favour of the stream. The ratio of the speed of the boat (in still water) and the stream is :
