Answer:
option C
Explanation:
given,
Q = +3.2 x 10⁻¹⁹ C 
E = 5.0 X 10⁵ V/m
 B = 0.80 T
ion's acceleration is zero  
when acceleration is zero the magnitude of both the forces becomes equal.
q E = q V B
 v = 
 v= 
v = 6.25 × 10⁵ m/s ≈ 6.3 × 10⁵ m/s 
hence, the correct answer is option C
 
        
             
        
        
        
I need help to I have a test and I need help to
        
             
        
        
        
Answer:
The magnitude of the tension on the ends of the clothesline is 41.85 N.
Explanation:
Given that,
Poles = 2
Distance = 16 m
Mass = 3 kg
Sags distance = 3 m
We need to calculate the angle made with vertical by mass
Using formula of angle



We need to calculate the magnitude of the tension on the ends of the clothesline
Using formula of tension

Put the value into the formula


 
  
Hence, The magnitude of the tension on the ends of the clothesline is 41.85 N.