Answer:
The material effects the speed if sound.
Explanation:
A denser material whose atoms are tightly packed will quickly transfer energy as they are close to each other than mediums like air.
Answer:
Option B
Explanation:
I did a question like this a long time ago so i'm not sure if its right so sorry if its wrong
Answer:
Explanation:
Given
number is given as 
and 

g=acceleration due to gravity
calculating for 




It can be transmit in hydraulic machine, exerting a small cross-sectional area can lead to pressure being transmitted