Answer:
The technique in which people use machines to learn how to control their bodies is known as D, Biofeedback.
Explanation:
Biofeedback is a variety of different machines that help people learn how to control their bodies depending on their specific needs, varying from things like scalp sensors, electrocardiographs, electromyographs and more.
 
        
                    
             
        
        
        
Answer:
a
   
b
   
Explanation:
From the question we are told that 
           The mass of the rock is  
           The  length of the small object from the rock is  
           The  length of the small object from the branch 
An image representing this lever set-up is shown on the first uploaded image 
Here the small object acts as a fulcrum 
The  force exerted by the weight of the rock is mathematically evaluated as
       
substituting values 
      
      
  So  at  equilibrium the sum  of the moment about the fulcrum is mathematically represented as 
          
Here   is very small so
 is very small so   
 
                                and  
Hence 
        
=>    
substituting values 
         
        
The  mechanical advantage is mathematically evaluated as 
           
substituting values 
         
        
 
        
             
        
        
        
Non living and dead are the same thing
        
                    
             
        
        
        
Current in the wire = 2 A
Explanation:
the magnetic field is given by
B= \frac{\mu i}{2\pi r}
μo= 4π x 10⁻⁷ Tm/A
i= current
r=0.02 m
B = magnetic field= 2 x 10⁻⁵ T
2 x 10⁻⁵= (4π x 10⁻⁷)(i) / (2π*0.02)
i=2 A