Answer:
3.28 cm
Explanation:
To solve this problem, you need to know that a magnetic field B perpendicular to the movement of a proton that moves at a velocity v will cause a Force F experimented by the particle that is orthogonal to both the velocity and the magnetic Field. When a particle experiments a Force orthogonal to its velocity, the path it will follow will be circular. The radius of said circle can be calculated using the expression: 
r = 
Where m is the mass of the particle, v is its velocity, q is its charge and B is the magnitude of the magnetic field.
The mass and  charge of a proton are:
m = 1.67 * 10^-27 kg
q = 1.6 * 10^-19 C
So, we get that the radius r will be:
r =   = 0.0328 m, or 3.28  cm.
 = 0.0328 m, or 3.28  cm.
 
        
             
        
        
        
Search it up bruhhhhhhhhhhhhh
        
                    
             
        
        
        
Answer:
. always start on the north pole and terminate (end) on the South Pole
Explanation:
 
        
             
        
        
        
Answer:
The angle of refraction is 37°. 
Explanation:
let n1 be the refractive index of glass and n2 = 1.0 be the refraction index of air, θ be the angle of incidence , ∅ be the angle of refraction.
then, according to Snell's law:
n1×sin(∅) = n2×sin(θ)
     sin(∅) = n2×sin(θ)/n1
               = (1.0)(sin(71°))/(1.56)
               = 0.606101651
           ∅ = 37°
Therefore, the angle of refraction is 37°. 
 
        
             
        
        
        
Sometimes scientists make a mistake or Miscalculate and need to do the experiment again.