The type of medium affects a sound wave as sound travels with the help of the vibration in particles. As different mediums have different amount and size of particles, for example, the speed of sound is faster through solid than liquid as solids have closely packed particles whereas liquids are loosely packed. Therefore the vibration is quicker in solids than liquids. 
Hope it helps you! :)
 
        
             
        
        
        
Let's see
Find enclosed area of loop



Now






 
        
             
        
        
        
<h3>
Answer:</h3>
It is a process of offering jobs to desired candidates and offering jobs to the desired applicant.
 
        
             
        
        
        
Answer:
Speed of  cannonball just before it hits the ground is  90.77 m/s
Explanation:
Complete Question 
A small cannon is placed on top of a fortification. the cannonball leaves the muzzle of the cannon with a speed of 85 m/s at an angle of 25°c above the horizontal. just before the cannonball hits the ground, the vertical component of velocity is 48 m/s downward. what is the speed of the cannonball just before it hits the ground? ignore air resistance.
Solution 
Given  
Speed = 85 m/s
The angle = 25 degrees
When it will hit the ground, then vertical velocity = 48 m/s
However, in the projectile motion, the horizontal component will not change  
Vr = V cos (theta) = 85 * cos25
Speed of  cannonball just before it hits the ground is  
V’ = Sqrt (48^2 + (85 * cos 25)^2) = 90.77 m/s