Answer:
cần cung cấp 70 độ vì nước sôi ở 100°C
Explanation:
 
        
             
        
        
        
Answer:
Zero
Explanation:
Given the equation of an ellipse:

The eccentrity of an ellipse is given by:

For a circle, we have

Therefore the eccentricity of a circle is

 
        
             
        
        
        
Answer:
w = 0.943 rad / s
Explanation:
For this problem we can use the law of conservation of angular momentum
        
Starting point. With the mouse in the center
             L₀ = I w₀
Where The moment of inertia (I) of a rod that rotates at one end is
          I = 1/3 M L²
Final point. When the mouse is at the end of the rod
            = I w + m L² w
 = I w + m L² w
As the system is formed by the rod and the mouse, the forces during the movement are internal, therefore the angular momentum is conserved
         L₀ = L_{f}
         I w₀ = (I + m L²) w
         w = I / I + m L²) w₀
We substitute the moment of inertia
         w  = 1/3 M L² / (1/3 M + m) L²    w₀
         w = 1 / 3M / (M / 3 + m) w₀
We substitute the values
       w = 1/3 / (1/3 + 0.02) w₀
       w = 0.943 w₀
To finish the calculation the initial angular velocity value is needed, if we assume that this value is w₀ = 1 rad / s
         w = 0.943 rad / s
 
        
             
        
        
        
Answer:
ion channel
Explanation:
discussion of ion channel structure and function, followed by the classical description of the action potential and the ... Resistance and Conductance depend on the size and shape of the object that you are passing ... Intracellular and extracellular ion concentrations must ... applied to essentially any cell type.
 
        
             
        
        
        
Answer:
1.) Current = 213.33A
2.) Potential difference = 3200 V
Explanation:
Given that 
Number of electrons n = 4 x 10^21 electrons 
Resistance R = 15 ohm 
Time t = 3 s
From the definition of current ;
Current is the rate of flow of changes. That is, 
Current I = Q/t
Where
Q = 4 × 10^21 × 1.6 × 10^-19
Q = 460C
Current I = 460/3
Current I = 213.33 A
Using Ohms law which state that 
V = IR
Substitute the resistance R and current I into the formula above 
Potential difference V = 213.3 × 15
Potential difference V = 3200 V