Answer:
  =20 turns
=20 turns
Explanation:
The given case is a step down transformer as we need to reduce 120 V to 6 V.
number of turns on primary coil N_{P}= 400
current delivered by  secondary coil  I_{S}= 500 mA
output voltage = 6 V (rms)
we know that 

putting values we get


to calculate number of turns in secondary

therefore,  =20 turns
=20 turns
 
        
             
        
        
        
<h3>Answer</h3>
6.6 N pointing to the right
<h3>Explanation</h3>
Given that,
two forces acting of magnitude 3.6N 
angle between them = 48°
To find,
the third force that will cause the object to be in equilibrium
<h3>1)</h3>
Find the vertical and horizontal components of the two forces
vertical force1 = sin(24)(3.6)
vertical force2= -sin(24)(3.6) 
<em>(negative sign since it is acting on opposite direction)</em>
vertical force3 = sin(24)(3.6) - sin(24)(3.6) 
                         = 0 
<h3>2)</h3>
horizontal force1 = cos(24)(3.6)
horizontal force2= cos(24)(3.6) 
horizontal force3 = cos(24)(3.6) + cos(24)(3.6)
                             = 2(cos(24)(3.6)) 
                             = 6.5775 N
                             ≈ 6.6 N
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Compression is above the equilibrium and rarefaction is below
        
             
        
        
        
Answer:
The relative speed of 1 relative to 2 is 0.88c
Explanation:
In relativistic mechanics the relative speed between 2 objects moving in different direction is given by

Since it is given that 

Applying values in the formula we get

 
        
             
        
        
        
By how much would its speed reading increase with each second of fall? ... Ex 3.24 For a freely falling object dropped from rest, what is its acceleration at the end of the 5th second ... Pb 3.3 A ball is thrown straight up with an initial speed of 30 m/s. How high does it go, and how long is it in the air (neglecting air resistance)?.