Answer:
     v = R w    
With this expression we see that for each point at different radius the tangential velocity is different
Explanation:
They indicate that the angular velocity is constant, that is
             w = dθ / dt
Where θ is the radius swept angle and t the time taken.
The tangential velocity is linear or
            v = dx / dt
Where x is the distance traveled in time (t)
  
In the definition of radians
           θ = s / R
Where s is the arc traveled and R the radius vector from the pivot point, if the angle is small the arc (s) and the length (x) are almost equal
          θ = x / R
 We substitute in the speed equation
          v = d (θ R) / dt
 The radius is a constant for each point
          v = R dθ / dt
          v = R w
 With this expression we see that for each point at different radius the tangential velocity is different
 
        
             
        
        
        
Vi = 4 m/s
vf = 22 m/s
t = 3s
a = ?
vf = vi + a * t
vf - vi = a * t
a = (vf - vi) / t
a = (22 - 4) / 3
a = 6 m / s^2
        
             
        
        
        
Answer:

Explanation:
Hello!
In this case, for this melting process, we can identify two sub-processes in order to take the stainless steel from solid to liquid:
1. Heat up from 298.15 K to 1673 K.
2. Undergo the phase transition.
Both process have an associated enthalpy as shown below:


Therefore, the required heat is:

Notice the problem is not providing neither the mass or volume, that is why we assumed the mass is 1 g; however, it can be changed to the mass you are given.
Best regards!
 
        
             
        
        
        
I believe the answer is CONVECTION.
hope that helps!!!
        
                    
             
        
        
        
Explanation:
When water is boiled in the flask . Some portion of it is evaporated out . Now when cork is placed on it and is placed in the ice box . It cools down , by which the pressure inside decreases .
Due to decrease of pressure , the boiling point of water also decreases . Now it can boil at lower temperature . Thus it starts boiling at lower temperature even , when placed in the ice box .