Mac and Keena are experimenting with pulses on a rope. Mac vibrates one end up and down while Keena holds the other end. This creates a pulse which they observe moving from end to end. How does the position of a point on the rope before the start of the pulse compare to its position after the pulse passes? Explain your reasoning.
        
             
        
        
        
Answer:
all of above I think sorry if I'm not right but I tried 
 
        
             
        
        
        
Either cyan bacteria or Precambrian time<span />
        
             
        
        
        
<h2>
Answer: 1.252</h2>
Explanation:
We are given this equation and we need to find the value of  :
:
 (1)
   (1)
Firstly, we have to clear  :
:
 
   
 
   
 (2)
     (2)
Applying<u> Natural Logarithm</u> on both sides of the equation (2):
 (3)
     (3)
 (4)
     (4)
According to the Natural Logarithm rules  , so (4) can be written as:
, so (4) can be written as:
 (5)
     (5)
Finally:
 
     
 
        
        
        
Answer:
Why is gravity so weird? No force is more familiar than gravity — it's what keeps our feet on the ground, after all. And Einstein's theory of general relativity gives a mathematical formulation for gravity, describing it as a “warping” of space.