All these people perform similar duties due to their similar profession.
All these People are the astronomers so they used various instruments that are present at their time in order to study the heavenly bodies such as stars and planets present in the sky. They also analyze their findings with the help of researches and experiments. They also develop theories that are based on personal observations and tested the theories of other astronomers in order to verify their theories.
brainly.com/question/24373447
The higher the frequency, the higher or sharper (the musical term if you prefer such things) the pitch is.
A wave front has the form of a surface of a sphere
Answer:
44.1 m
Explanation:
<u>Given:</u>
- = speed of sound in air = 343 m/s
- = speed of sound in the rod =
- = times interval between the hearing the sound twice = 0.12 s
<u>Assumptions:</u>
- = length of the rod
- = time taken by the sound to travel through the rod
- = time taken by the sound to travel to through air to the same point =
We know that the distance traveled by the sound in a particular medium is equal to the product of the speed of sound in that medium and the time taken.
For traveling sound through the rod, we have
..........eqn(1)
For traveling sound through the air to the women ear for traveling the same distance, we have
Hence, the length of the rod is 44.1 m.