answer the following questions in detail any two
Answers
Explanation:
1. The repetition of sound caused by its reflection of a hard surface is known as echo. Factors important to get a distinct echo are: The minimum distance between the source and reflector of sound should be 17m. The size of reflector must be large enough as compared to the wavelength of the sound wave.
2.Draw a line parallel to x-axis DA from point, D from where object starts moving. Draw another line BA from point B parallel to y-axis which meets at E at y-axis. Above equation is the relation among initial velocity (u ), final velocity (v ), acceleration (a) and time (t). It is called first equation of motion.
Answer:
answer 1
Explanation:
In audio signal processing and acoustics, an echo is a reflection of sound that arrives at the listener with a delay after the direct sound. The delay is directly proportional to the distance of the reflecting surface from the source and the listener
And answer 2 First Equation of Motion : v=u+at.