Answer:
The micturition reflex can be voluntarily controlled by the relaxation of the external urethral sphincter.
 
        
             
        
        
        
Answer:m1v1 + m2v2 = (m1f + m2f)vf. 3000kg(10.0m/s) + (15000kg)(0.0m/s) = (18000kg)(vf).
Explanation:
 
        
             
        
        
        
Answer:
The  time elapsed at the spacecraft’s frame is less that the time elapsed at earth's  frame 
Explanation:
From the question we are told that 
The distance between earth and Retah is  
Here c is the peed of light with value 
 The time taken to reach Retah from earth is  
 The velocity of the spacecraft is mathematically evaluated  as 
      
substituting values 
    
     
The time elapsed in the spacecraft’s frame is mathematically evaluated as 
       
substituting value 
        ![T  =  90000 *  \sqrt{ 1 -  \frac{[2.4*10^{8}]^2}{[3.0*10^{8}]^2} }](https://tex.z-dn.net/?f=T%20%20%3D%20%2090000%20%2A%20%20%5Csqrt%7B%201%20-%20%20%5Cfrac%7B%5B2.4%2A10%5E%7B8%7D%5D%5E2%7D%7B%5B3.0%2A10%5E%7B8%7D%5D%5E2%7D%20%7D)
         
=>    
So  The  time elapsed at the spacecraft’s frame is less that the time elapsed at earth's  frame 
         
 
        
             
        
        
        
Answer:
False
Explanation:
A wave is a disturbance that transfers energy from one place to another without transferring matter. 
 
        
                    
             
        
        
        
True ..............................