<span>c) what is the angle (relative to the horizontal) of the balls initial velocity?
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The coefficient of static friction between the puck and the surface.
In fact, that coefficient describes exactly how "hard" it is to cause the puck to start moving, if it starts from an idle condition.
 
        
                    
             
        
        
        
Answer:
The tension increases to four times its original value.
Explanation:
v = Velocity
r = Radius
m = Mass of stone
The centripetal force is 

The tension will balance the centripetal force



The new tension will be 4 times the old tension
 
        
             
        
        
        
Answer:
the tension in the part of the cord attached to the textbook is 7.4989 N
Explanation: 
Given the data in the question; 
 As illustrated in the image below;
first we determine the value of the acceleration, 
along vertical direction; we use the second equation of motion;
y = ut +  a
a t²
t²
we substitute;
0 m/s for u, 1.29 m for y, 0.850 s for t, 
1.29 = 0×0.850  +  ×a
×a ×(0.850)²
×(0.850)²
1.29 = 0.36125a
a = 1.29 / 0.36125
 = 1.29 / 0.36125
a = 3.5709 m/s²
 = 3.5709 m/s²
Now when the text book is moving with acceleration , the dynamic equation will be;
T₁ = m₁a
where m₁ is the mass of the text book ( 2.10 kg )
a is the vertical acceleration ( 3.5709 m/s² )
 is the vertical acceleration ( 3.5709 m/s² )
so we substitute
T₁ = 2.10 × 3.5709 
T₁ = 7.4989 N
Therefore, the tension in the part of the cord attached to the textbook is 7.4989 N
 
        
             
        
        
        
Answer:
Generally Accepted Accounting Principles (GAAP)
Explanation:
The body of rules and procedures that guide the measurement and communication of financial accounting information in the United States is known as: