Answer:
  y = 77.74 10⁻⁵ m
Explanation:
For this exercise we can use Newton's second law
         F = m a
         a = F / m
         a = 4.9 10⁻¹⁶ / 9.1 10⁻³¹
         a = 0.538 10¹⁵ m / s
This is the vertical acceleration of the electron.
Now let's use kinematics to find the time it takes to move the 
          x= 29 mm = 29 10⁻³ m
 On the x axis
             v = x / t
             t = x / v
             t = 29 10⁻³ / 1.7 10⁷
             t = 17 10⁻¹⁰ s
Now we can look for vertical distance at this time.
             y =  t + ½ a t²
 t + ½ a t²
             y = 0 + ½ 0.538 10¹⁵ (17 10⁻¹⁰)²
             y = 77.74 10⁻⁵ m
 
        
                    
             
        
        
        
Scientists use models to study atoms, Because atoms are very tiny, and almost impossible to cut open and look inside.. And the center of an atom is the nucleus and that is ever smaller.
        
             
        
        
        
Answer:
Explanation:
V = J/C
V = 20/1
= 20 v
Option A is the correct answer 
 
        
             
        
        
        
Answer:
Particle radiation
Explanation:
nuclear process is in atom nucleas maybe emit the electron ,neutrino or anti-neutrino 
 
        
             
        
        
        
Answer:
Infinite Distance
Explanation:
The electric potential due to a point charge can be expressed by the following equation:

Here,
V is the electric potential due to the point charge
k is the proportionality constant
Q is the magnitude of the point charge
r is the distance from the charge
As the value of r increases, the value of V decreases since there is an inverse relation between the two. The value of V can be absolutely 0 when the distance from the charge is infinite i.e. r is infinite. Mathematically, dividing a number by infinity results in zero. Also theoretically speaking, at infinite distance the electric field lines won't approach and hence the electric potential would be zero.