A man who broke his palm heard an echo after 1s. At what distance is the obstacle. Sound speed in air 340 m / s
| October 8, 2021 | education
t = 1 s.
V = 340 m / s.
S1 -?
The sound from a clap in the palm reaches the obstacle, is reflected from it and returns back. The sound travels the distance S = 2 * S1, where S1 is the distance to the obstacle.
The time of sound movement t is expressed by the formula: t = S / V = 2 * S1 / V.
S1 = V * t / 2.
S1 = 340 m / s * 1 s / 2 = 170 m.
Answer: the obstacle is at a distance of S1 = 170 m.
One of the components of a person's success in our time is receiving modern high-quality education, mastering the knowledge, skills and abilities necessary for life in society. A person today needs to study almost all his life, mastering everything new and new, acquiring the necessary professional qualities.
