Constant = straight line
“Travels at constant negative acc.”
Which is negative slope
Solution: B. Straight line w/ neg. slope
        
             
        
        
        
You should just ask the wave 
        
             
        
        
        
We want to find the combined volume of 3 tennis balls. We will get that the combined volume is 493.7 cm^3
First, remember that for a sphere of diameter D, the volume is:

Where 3.14 is pi.
Here we know that the average diameter of a tennis ball is 6.8cm, then we can replace that in the above equation to find the volume (in average) of a single tennis ball:

Now, in 3 balls of tennis, the combined volume will be 3 times the above one, this is:

If you want to learn more about volumes, you can read:
brainly.com/question/10171109
 
        
             
        
        
        
Answer:
Wavelength.
Explanation:
1 period, or wavelength, is measured from one crest to another or from one trough to another.
 
        
             
        
        
        
Answer:
Time period for Simple pendulum, 
Explanation:
The Simple Pendulum
Consider a small bob of mass  is tied to extensible string of length
 is tied to extensible string of length  that is fixed to rigid support. The bob is oscillating in the plane about verticle.
 that is fixed to rigid support. The bob is oscillating in the plane about verticle.
        Let  is the angle made by string with vertical  during oscillation.
 is the angle made by string with vertical  during oscillation. 
Vertical component of the force on bob,  
 
Negative sign shows that its opposing the motion of bob.
Taking  as very small angle then,
 as very small angle then, 
 
    
Let  is the displacement made by bob from its mean position ,
 is the displacement made by bob from its mean position ,
then, 
so,  ........(1)
                ........(1)
Since, pendulum is in hormonic motion,
as we know, 
where  is the constant and
 is the constant and 
 .........(2)
                   .........(2)
From equation (1) and (2)


Since, 

