The final momentum of the body is equal to 120 Kg.m/s.
<h3>What is momentum?</h3>
Momentum can be described as the multiplication of the mass and velocity of an object. Momentum is a vector quantity as it carries magnitude and direction. 
If m is an object's mass and v is its velocity then the object's momentum p is:  . The S.I. unit of measurement of momentum is kg⋅m/s, which is equivalent to the N.s.
 . The S.I. unit of measurement of momentum is kg⋅m/s, which is equivalent to the N.s.
Given the initial momentum of the body = Pi = 20 Kg.m/s
The force acting on the body, Pf = 25 N
The time, Δt = 4-0 = 4s
The Force is equal to the change in momentum: F ×Δt = ΔP
25 × 4 = P - 20
100 = P - 20
P = 100 + 20 = 120  Kg.m/s
Therefore, the final momentum of a body is 120 Kg.m/s.
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Answer:
1. 24375 N/C
2. 2925 V
Explanation:
d = 12 cm = 0.12 m 
F = 3.9 x 10^-15 N 
q = 1.6 x 10^-19 C
1. The relation between the electric field and the charge is given by 
F = q E 
So, 

E = 24375 N/C
2. The potential difference and the electric field is related by the given relation.
V = E x d 
where, V be the potential difference, E be the electric field strength and d be the distance between the electrodes. 
By substituting the values, we get 
V = 24375 x 0.12 = 2925 Volt
 
        
             
        
        
        
Answer:
Step 7- Communicate. Present/share your results. Replicate.
Step 1- Question.
Step 2-Research.
Step 3-Hypothesis.
Step 4-Experiment.
Step 5-Observations.
Step 6-Results/Conclusion
Explanation:
 
        
                    
             
        
        
        
Answer:
Only 2,3,4 are true
Explanation:
Bosons Particles are particles that condense to the same state. Bosons particle have integral spin like 0 ,  ,
,  ,
,  , etc. Bosons particles always have asymmetric wave function and there is exchange of particles.
, etc. Bosons particles always have asymmetric wave function and there is exchange of particles.
1) It does not obey Fermi_ Dirac statistics
2) It obeys Bose-Einstein statistics
3) The object can have intrinsic spin 
4) Yes the Bosons particle is always symmetric with exchange of particles
5) No Bosons particle are symmetric and not asymmetric
 
        
             
        
        
        
Here we apply conservation of linear momentum. The momentum of the truck with cargo and without cargo remains constant. That is,
 .
.
Here  are initial mass and velocity.
 are initial mass and velocity.  are final mass and velocity. Here
 are final mass and velocity. Here  and
 and  .
.
The velocity of the truck be after its cargo is taken off is
