100 J
Please mark me brainliest it would be greatly appreciated haha
        
                    
             
        
        
        
Answer:

Explanation:
As per energy conservation we know that the electrostatic potential energy of the charge system is equal to the initial kinetic energy of the alpha particle
So here we can write it as

now we know that


z = 79
here kinetic energy of the incident alpha particle is given as

now we have

now we have

 
        
             
        
        
        
In series circuit, Req = R₁ + R₂ + R₃ + ···
In parallel circuit, 
<h3>Q7.</h3>
total resistance in the upper branch = R₂ + R₃ = R₂ + 2


R₂ + 2 = 12
R₂ = 10Ω
<h3>Q8.</h3>


Req = 1.7Ω
 
        
             
        
        
        
Momentum (p) = mass × velocity 
P= 200,000×4.5 
P= 900,000 .... answer !!