12.A body is dropped into a deep well.Sound of splash is heard after 4.23s .If the depth of the well is 78.4mthe velocity of sound in air is

An iron block is dropped into a deep well. Sound of splash is heard after 4.23 s. If the depth of the well is 78. 4 m , then find the speed of sound in air (g=9.8 m//s^(2))

A stone is dropped into a well. The splash is heard 3.35 s later. What is the depth of the well?

A stone is dropped into a well of depth 80 m . Splash of sound is heard after 4.25 sec . If g=10ms^(-2) , velocity of sound in air is A) 300 ms^(-1) ; B) 360 ms^(-1) ; C) 320 ms^(-1) ; D) 400 ms^(-1) ;

A stone is dropped in a well which is 19.6 m deep. Echo sound is heard after 2.06 sec (after dropping) then the velocity of sound is

A stone is dropped into a well 44.1 deep. The sound of splash is heard 0 . 13 seconds after the stone hits the water. What should be the velocity of sounds in air .

A ship steams towards a hill in the sea and sounds its siren and the echo is heard after 6 s. The siren is sounded again 3 minutes later after the first sounding and the echo is heard after 4 s. If the velocity of the ship is 6.87 kmph, calculate the velocity of sound in air.

A stone is dropped into a well and its splash is heard at the mouth of the well after an interval of 1.45 s.Find the depth of the well. Given that velocity of sound in air at room temperature is equal to 332 ms^(-1) .

The splash of sound was heard 5.35 s after dropping a stone into a well 122.5 m deep. Velocity of sound in air is