Add all the sec. and all the meter's and then add the meter's and sec. together
        
             
        
        
        
Answer:
1. t = 0.0819s
2. W = 0.25N
3. n = 36
4. y(x , t)= Acos[172x + 2730t]
Explanation:
1) The given equation is

The relationship between velocity and propagation constant is

v = 15.87m/s
Time taken, 

t = 0.0819s
2)
The velocity of transverse wave is given by


mass of string is calculated thus
mg = 0.0125N

m = 0.00128kg


 0.25N
 0.25N
3)
The propagation constant k is

hence

 0.036 m
 0.036 m
No of wavelengths, n is

n = 36
4)
The equation of wave travelling down the string is 
![y(x, t)=Acos[kx -wt]\\\\becomes\\\\y(x , t)= Acos[(172 rad.m)x + (2730 rad.s)t]](https://tex.z-dn.net/?f=y%28x%2C%20t%29%3DAcos%5Bkx%20-wt%5D%5C%5C%5C%5Cbecomes%5C%5C%5C%5Cy%28x%20%2C%20t%29%3D%20Acos%5B%28172%20rad.m%29x%20%2B%20%282730%20rad.s%29t%5D)
![without, unit\\\\y(x , t)= Acos[172x + 2730t]](https://tex.z-dn.net/?f=without%2C%20unit%5C%5C%5C%5Cy%28x%20%2C%20t%29%3D%20Acos%5B172x%20%2B%202730t%5D)
 
        
             
        
        
        
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Work is the force on the object as it changes a distance. Interestingly, as work is done on an object, potential energy can be stored in that object. For example, if you carry a load up the stairs. Now that load will have potential energy that can be transformed into kinetic energy and so on
        
             
        
        
        
Answer:
1.27 m
Explanation:
Distance = 192 m 
number of rotations = 48 
Distance traveled in one rotation = 2 x π x r 
Where, r be the radius of wheel.
so, distance traveled in 48 rotations = 48 x 2 x 3.14 x r 
It is equal to the distance traveled. 
192 = 48 x 2 x 3.14 x r 
r = 0.637 m 
diameter of wheel = 2 x radius of wheel = 2 x 0.637 = 1.27 m
 
        
                    
             
        
        
        
Answer: 4 is the subscript in  .
.
Explanation:
We know that,
Subscript: The number of atom present in a given compound.
In  , 4 represents the number of chlorine atom in 1 mole of Silicon tetra chloride.
, 4 represents the number of chlorine atom in 1 mole of Silicon tetra chloride.
Coefficient: Number of atom which is used in reaction.
For example: In  , 3 is the coefficient of silicon tetra chloride.
, 3 is the coefficient of silicon tetra chloride.
A Product : In the balance equation, right hand side is called product.
A reactant : In the balance equation, left hand side is called reactant.
For example: the balance equation is

In this equation,  is the reactants and
 is the reactants and  is products.
 is products.
Hence, 4 is the subscript in  .
.