Field strength =force/unit mass 
= 14.8N/ 4kg = 3.7N/kg
        
                    
             
        
        
        
For the first one 320
second 
1200W
Data
R = 12 Ω ∆V = 120V I =? P =?
Solution:
According to Ohm’s law,
∆V = I R
I = ∆V / R  
= 120 / 12  
= 10 A
Power P = I ∆V  
= 10 x 120  
= 1200 W
Third
∆V = 120 V P = 60 W I =? R =?
Use the formula, P = I ∆V
I = P / ∆V = 60 / 120 = 0.5 A
∆V = I R
R = ∆V / I = 120 / 0.5 = 240 Ω
 
        
             
        
        
        
Answer:
Option A
Explanation:
The graph for this problem must depict the following ""Increased allocation of resources to reproduction relative to growth diminished future fecundity."
Hence, the survivor ship must be on the Y axis and the resources on the X axis. 
Here the resources include the number of seeds produced. 
hence, the higher is the number of seeds (resource), the lower is the survivorship (future fecundity)
Hence, option A is correct
 
        
             
        
        
        
Answer:
a
  Solid Wire      
      
   Stranded  Wire  
b
   Solid Wire    
 
    Stranded  Wire   
 
Explanation:
Considering the first question 
From the question we are told that 
   The  radius of the first wire is  
   The radius of  each strand is  
   The current density in both wires is  
Considering the first wire 
      The  cross-sectional area of the first wire is 
       
= >   
 
= >   
 
Generally the current in the first wire is    
      
=>  
=>   
 
Considering the second wire  wire 
The  cross-sectional area of the second wire is 
      
=>     
=>  
Generally the current is   
       
=>    
=>    
Considering question two  
  From the question we are told that 
      Resistivity is  
      The  length of each wire  is  
Generally the resistance of the first wire is mathematically represented as 
      
 
=>  
 
=>  
 
Generally the resistance of the first wire is mathematically represented as 
      
 
=>  
 
=>  
 
 
        
             
        
        
        
Answer:
Applying enough force in one direction to move the object, making kinetic energy.
Explanation:
Simpleness