Answer:
I don't know I'm sorry I will tell you another answer asks me 
 
        
             
        
        
        
Answer:
Intensity Of MRI signal is related as square of  
 
or
Intensity is related as  .
.
Explanation:
MRI simply means Magnetic Resonance Imaging. In this process by the resonance of magnetic field the frequency is produced which is used to image the body parts (Mainly the brain).
The signal Strength is the rate of change of Magnetization (M) with respect to the time. For the calculation of Intensity we use Bloch equation which is given by

On further solving

So, Intensity is related as  .
. 
 
        
             
        
        
        
Answer:
The energy would remain equal to that of the initial kinetic energy since it is a frictionless surface. However if it is an inelastic collision then energy would be lost due to sound and heat.
Explanation: