A buzzer is sounded once at a distance of 1.0km from a listener.
(i) Calculate the time taken for the sound to reach the listener through air if the speed of sound in air is 340m/s.
(ii) If the same buzzer is placed under water at the same distance and the speed of sound in water is 1500m/s, by how many seconds will the sound reach the listener sooner through water than through air?
a. (i) Time taken through air
b. (ii) Time difference between the two media