Question

In an experiment to determine the speed of sound in air.
In an experiment to determine the speed of sound in
a student bangs two blocks of wood together when
standing 125 m away from a high wall. The student
hears the echo from the wall within one second of
banging the blocks together. When he bangs the blocks
repeatedly at a certain regular rate. he can no longer
hear the echoes.
b) the lowest rate of banging for which the echoes cannot be heard is 81 bangs per minute. Calculate a value for the speed of sound in air.​

Answer 1

Answer:

Biosphere is the narrow zone of contact between the land, water and air which interact with each other to support human life.