Answer:
F₁ = 4 F₀
Explanation:
The force applied on the string by the ball attached to it, while in circular motion will be equal to the centripetal force. Therefore, at time t₀, the force on ball F₀ is given as:
F₀ = mv₀²/r   --------------- equation (1)
where,
F₀ = Force on string at t₀
m = mass of ball 
v₀ = speed of ball at t₀ 
r = radius of circular path
Now, at time t₁:
v₁ = 2v₀
F₁ = mv₁²/r
F₁ = m(2v₀)²/r
F₁ = 4 mv₀²/r
using equation (1):
<u>F₁ = 4 F₀</u>
 
        
             
        
        
        
Answer:
 0.2286  m,  0.686 m and  1,143 m
therefore we see that there is respect even where the intensity is minimal
Explanation:
Destructive interference to the two speakers is described by the expression
        Δr = (2n +1) λ/2
where r is the distance,  λ the wavelength and n an integer indicating the order of the interference
let's locate the origin on the left speaker
 let's find the wavelength with the equation
         v =  λ f
          λ = v / f
we substitute
       Δr = (2n + 1) v / 2f
let's calculate for difference values of n
      Δr = (2n +1) 343/(2 750)
      Δr = (2n + 1) 0.2286
we locate the different values for a minimum of interim
     n     Δr (m)
      0    0.2286
      1     0.686
      2    1,143
therefore we see that there is respect even where the intensity is minimal
 
        
             
        
        
        
Answer:
answer is 1000 N
formula used-
<em><u>F= m x (v-u/t)</u></em>
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Answer:
Explanation:
The diagram has a fairly simple explanation. In the top diagram, the space between the particle is increasing. That means that acceleration is increasing. The bottom diagram shows just the opposite. The particle starts off making large "distances" between where the particle is recorded and then the distances between recordings lessens and the particle is slowing down.
Rule: the greater the "distance" between dot positions, the greater the acceleration, because the speed is large. 
Top diagram: increasing distance between dots = larger speed. The distance becomes greater as the particle moves to the right.
Bottom diagram: starts off large and decreases as we move from left to right  = - acceleration.  
 
        
             
        
        
        
F = Magnetic Force
B = Magnetic Field
V = Velocity
*The vectors from the photo you get doing the left-hand rule.
The magnetic force is always perpendicular to the magnetic field.
And as told in the statement, the electron is moving perpendicular to a magnetic field, that is, the Velocity forms an 90 degree angle / Right angle with the magnetic field.
The formula to find the Magnetic Force is:

Where "q" is the Charge and the sin theta is the angle formed by the Velocity and Magnetic Field, in this case it's 90°. Sin 90° = 1.

Newton (N) = C x m/s x T = (C x m x T)/s