Answer:
1 - theory
2 - law
3 - hypothesis
Explanation:
I'm pretty sure this is correct
 
        
             
        
        
        
Answer:
1,632 rounded by the nearest ten is 1630
783 rounded by the nearest hundred is 800
43,761 rounded by the nearest thousand is 44,00
Explanation:
 
        
                    
             
        
        
        
Answer:
  E = 3.04 10⁻⁵ N / C
Explanation:
In this problem we can use the kinematics to find how long it takes the electron to travel the plates
Let's start by reducing the magnitudes to the SI system
               vₓ = 5.35 10⁶ m / s
               x = 2 cm = 2 10⁻² m
               y = 1 cm = 1 10⁻² m
              x = vₓ t
              t = x / vₓ
              t = 2 10⁻² / 5.35 10⁶
              t = 3,738 10⁻⁹ s
This time is also the time it takes for vertical movement to go from the center to the plate, let's look for acceleration with Newton's second law
               F = m a
               a = F / m = e E / m
               y =  + ½ a t²
 + ½ a t²
                = 0
 = 0
We replace
               y = ½ e / m E t²
               E = 2 y m / e t²
Let's calculate
             E = 2  1 10⁻²  9.1 10⁻³¹ / (1.6 10⁻¹⁹  3,738 10⁻⁹)
             E = 18.2 10⁻³³ / 5.98 10⁻²⁸
             E = 3.04 10⁻⁵ N / C