Answer:
x=y
Step-by-step explanation:
becuase I need pointssss
 
        
             
        
        
        
Full Question
A 10 kilogram object suspended from the end of a vertically hanging spring stretches the spring 9.8 centimeters. At time t = 0, the resulting mass—spring system is disturbed from its rest state by the force F (t) = 20 cos(8t). The force F (t) is expressed in Newtons and is positive in the downward direction, and time is measured in seconds. 
Determine the spring constant k. 
Answer:
Spring Constant = 1000Nm^-1
Step-by-step explanation:
Given
Mass = 10kg
Spring Extension = 9.8cm
Spring Constant K = Force/Extension
Force = Mass * Acceleration
Force = 10 * 9.8 = 9.8N
Spring Extension = 9.8 cm = 9.8 /100 = 0.098 m 
Spring constant = 98 / 0.098 
Spring Constant = 1000Nm^-1
 
        
             
        
        
        
Answer:

Step-by-step explanation:
We can use the definition of inverse functions. Recall that if two functions, <em>f</em> and <em>g</em> are inverses, then: 

So, we can let <em>j</em> be the inverse function of <em>h</em>. 
Function <em>h</em> is given by: 

Find its inverse. Flip variables: 

Solve for <em>y. </em>Add: 

Hence: 

Therefore, <em>a</em> = 1/3 and <em>b</em> = 2/3. 
We can verify our solution: 

And: 

 
        
             
        
        
        
Speed is distance over time. There’s no distance in the question and the time is 1 hr 30 mins hence 1.5 hours.
        
             
        
        
        
In 144 minutes, or at 5:19 pm, the trains will arrive at the same time again.