Answer:
D. The frequency is not affected as the volume of sound increases
Explanation:
Volume of the sound is defined by the amplitude of the wave or how loud a sound is whereas Frequency is basically the pitch of the sound and is inversely proportional to the wavelength . Increasing frequency will increase the pitch of the sound without affecting it's volume.
 
        
             
        
        
        
Answer:
Yes
Explanation:
An object can be moving (have kinetic energy) and be elevated above the ground at the same time (and also have potential energy).
 
        
             
        
        
        
Answer:
B) 
Explanation:
The electric force between charges can be determined by;
F = 
Where: F is the force, k is the Coulomb's constant,  is the value of the first charge,
 is the value of the first charge,  is the value of the second charge, r is the distance between the centers of the charges.
 is the value of the second charge, r is the distance between the centers of the charges.
Let the original charge be represented by q, so that;
 = 2q
 = 2q
 =
 = 
So that,
F = 
 x
 x 
   = 2q x  x
 x 
   =  x
 x 
   =  x
 x 
F =  x
 x 
The electric force between the given charges would change by  .
.