A straight tube consists of a 0.20m section filled with air followed by a 1.50m section filled with water. A short sound pulse enters one end of the tube and emerges from the other end after 0.0015s. If the speed of sound in air is 340m/s, calculate the speed of sound in water.
(a) 1.5×103m/s
(b) 1.6×103m/s
(c) 3.4×102m/s
(d) 1.1×103m/s